Android: leading glyph ink clipped at RTL (Arabic) line starts - API 35 fix exists (setShiftDrawingOffsetForStartOverhang) but TextLayoutManager never sets it; existing reflection handle has zero call sites

### Description

## Description
Arabic glyphs whose ink extends past their advance width (alef-wasla ٱ, alef-madda آ, lam-alef ligatures) are clipped at the leading (right) edge — but only when the glyph's word starts a line. Mid-line instances render correctly. iOS is unaffected.

This is the same defect family as #32645 (open since 2021). We spent a multi-day investigation and can supply the full elimination matrix; summary below.

## What we established
- Padding cannot fix it: tested to a 24pt ceiling on a line with 2.23pt of measured overhang ink — still clipped. The clip is internal to line layout, not box geometry.
- Every directional lever (direction:'rtl' on Text, on ancestor View, textAlign:'right', 'justify') engages the clipping path. Removing all directional styling renders the ink but loses right-flush (alignment follows component layout direction, not paragraph bidi).
- Measured ink (fontkit, shaped runs via font.layout(), 26pt): Amiri worst-case leading overhang 2.23pt; KFGQPC Hafs 1.04pt; Noto Naskh 0.49pt. Fonts with ink inside advances mask the bug — it is not rare, just font-dependent.
- 8347cc4 (0.83.2) explicitly scopes its two-pass bounds fix to unconstrained/AT_MOST text ("Text with EXACTLY width mode is unaffected") — full-width paragraphs measure EXACTLY and never receive it.

## The fix that exists but is never called
Android 15 (API 35) added StaticLayout.Builder#setUseBoundsForWidth and #setShiftDrawingOffsetForStartOverhang — the latter is documented as shifting the drawing offset so start-side overhang ink renders instead of clipping. In RN 0.86.2:
- TextLayoutManager.kt has exactly ONE StaticLayout.Builder site (buildLayout, ~line 674, the funnel for both measurement and Fabric layout creation). Neither setter is applied there.
- TextLayoutManager.kt:108-118 already contains a lazily-cached reflection Method handle for setUseBoundsForWidth — with zero call sites anywhere in the tree. The plumbing exists; it was never connected.
- App-side workarounds are impossible under Fabric: with enablePreparedTextLayout active (observed enabled under Expo SDK 57), all text renders via PreparedLayoutTextView from the precomputed layout; runtime probing found reactTextViews=0 of 31 text views, so no view-level setter can reach the drawn layout.

Proposed fix (verified non-executing in-app; we could not build RN from source to device-test it):

    // TextLayoutManager.kt, buildLayout(), before builder.build():
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.VANILLA_ICE_CREAM) {
      builder.setUseBoundsForWidth(true)
      builder.setShiftDrawingOffsetForStartOverhang(true)
    }

## Reproducer
https://github.com/muhasabahhub/android-react-native-arabic

## Environment
| react-native | 0.86.2 (new architecture / Fabric, `newArchEnabled: true`) |
| expo | ~57.0.15 |
| Font | Amiri Regular, bundled at `assets/fonts/Amiri-Regular.ttf` (SIL OFL 1.1, `assets/fonts/OFL.txt`) |
| Reproduces on | Android 15 (API 35) and Android 16 (API 36) |
| Does not reproduce on | iOS |

The font matters: Amiri's alif-madda has ~2.2pt of ink past its advance box at
`fontSize: 26`. A low-overhang face such as Noto Naskh (~0.5pt) hides the bug
without fixing it.

## Screenshots
<img width="1080" height="2340" alt="Image" src="https://github.com/user-attachments/assets/163a3456-99a6-4a72-bcd1-41d0e5efd1fb" />

### Steps to reproduce

# rtl-ink-clip-repro

Minimal reproduction: **Arabic leading ink is clipped at the start of an RTL line on Android.**

Text 1 clips the alif-madda's leading ink at line start (Android 15+, RN 0.86/Fabric).
Text 2 renders the ink but flushes left.
iOS renders both correctly.


## Repro steps

1. `npm install`
2. `npx expo run:android` — a **dev build is required**; this cannot be seen in Expo Go.
3. Look at the two tinted paragraphs. The tint is each `<Text>`'s own background,
   so the coloured rectangle *is* the view's box.
4. Find the word beginning with U+0622 (alif madda) at the **start of the second
   line** of each paragraph. The console prints the first codepoint of every
   rendered line via `onTextLayout`, e.g. `[text1-direction-rtl] line 2 starts U+0622`
   — use it to confirm the word is positioned correctly.
5. If U+0622 does not land at the start of line 2 on your screen width, adjust
   `FILLER_COUNT_BEFORE` in `App.tsx` and repeat.

Both `<Text>` elements are full-width with **zero horizontal padding**, deliberately:
any side padding widens the view's bounds and masks the clipping.

## Expected

The alif-madda's madda stroke renders in full, inside the tinted box, at the
right-hand (reading-start) edge of line 2 — as it does on iOS.

## Actual

- **Text 1** (`style={{ direction: 'rtl' }}`): the paragraph is correctly
  right-aligned, and the madda stroke is **cut off vertically at the tint's
  right edge**. The ink that overhangs the glyph's advance box falls outside
  the text view's bounds and is not drawn.
- **Text 2** (no `direction` style, string prefixed with U+200F RLM): the same
  glyph renders **complete**, because the paragraph is flushed to the left and
  the leading edge is no longer at the view's boundary — so the ink has room.
  This is not a usable workaround: the paragraph is now left-aligned.

Text 2 is included to show that the clipping is a function of *where the line
starts relative to the view's bounds*, not of the glyph or the font.

## Likely cause

`ReactAndroid/.../views/text/TextLayoutManager.kt` builds every layout at a
single `StaticLayout.Builder.obtain(...)` site and sets neither of the two
Android 15 APIs intended for exactly this case:

```kotlin
.setUseBoundsForWidth(true)
.setShiftDrawingOffsetForStartOverhang(true)
```

Notably, RN 0.86.2 already carries a lazily cached reflection handle for
`setUseBoundsForWidth` (`TextLayoutManager.kt:108-118`, with the comment
"Reflection is needed because some internal targets compile against an SDK
older than 35") — but it has **zero call sites**, and no feature flag guards
it. The API is reached for and then never used.

`ReactTextView.onDraw` ends in `super.onDraw(canvas)`, i.e. the view draws the
`Layout` that `TextView.makeNewLayout()` builds for itself, so the equivalent
`TextView` setters at attach time are a second possible site.
## Likely cause

`ReactAndroid/.../views/text/TextLayoutManager.kt` builds every layout at a
single `StaticLayout.Builder.obtain(...)` site and sets neither of the two
Android 15 APIs intended for exactly this case:

```kotlin
.setUseBoundsForWidth(true)
.setShiftDrawingOffsetForStartOverhang(true)
```

Notably, RN 0.86.2 already carries a lazily cached reflection handle for
`setUseBoundsForWidth` (`TextLayoutManager.kt:108-118`, with the comment
"Reflection is needed because some internal targets compile against an SDK
older than 35") — but it has **zero call sites**, and no feature flag guards
it. The API is reached for and then never used.

`ReactTextView.onDraw` ends in `super.onDraw(canvas)`, i.e. the view draws the
`Layout` that `TextView.makeNewLayout()` builds for itself, so the equivalent
`TextView` setters at attach time are a second possible site.

### React Native Version

0.86.2

### Affected Platforms

Runtime - Android

### Output of `npx @react-native-community/cli info`

```text
System:
    OS: Windows 11 10.0.26200
    CPU: (22) x64 Intel(R) Core(TM) Ultra 7 155H
    Memory: 2.23 GB / 15.59 GB
  Binaries:
    Node:
      version: 24.13.1
      path: C:\Program Files\nodejs\node.EXE
    Yarn: Not Found
    npm:
      version: 11.19.0
      path: C:\Program Files\nodejs\npm.CMD
    Watchman: Not Found
  SDKs:
    Android SDK:
      API Levels:
        - "34"
        - "35"
        - "36"
      Build Tools:
        - 33.0.1
        - 34.0.0
        - 35.0.0
        - 36.0.0
      System Images:
        - android-35 | Google Play Intel x86_64 Atom
      Android NDK: Not Found
    Windows SDK:
      AllowDevelopmentWithoutDevLicense: Enabled
      AllowAllTrustedApps: Enabled
  IDEs:
    Android Studio: AI-253.29346.138.2531.14876573
    Visual Studio:
      - 17.14.37314.3 (Visual Studio Community 2022)
  Languages:
    Java:
      version: 23.0.1
      path: C:\Program Files\Common Files\Oracle\Java\javapath\javac.EXE
    Ruby: Not Found
  npmPackages:
    "@react-native-community/cli": Not Found
    react:
      installed: 19.2.3
      wanted: 19.2.3
    react-native:
      installed: 0.86.2
      wanted: 0.86.2
    react-native-windows: Not Found
  npmGlobalPackages:
    "*react-native*": Not Found
  Android:
    hermesEnabled: Not found
    newArchEnabled: Not found
  iOS:
    hermesEnabled: Not found
    newArchEnabled: Not found

 - newArchEnabled: true — set in app.json, so this is Fabric.
 - Hermes is on (Expo SDK 57 default).
```

### Stacktrace or Logs

```text
--------- beginning of main
08-20 10:56:26.349 17466 17466 I INKFLAG : probe[requestLayout+invalidate]: sdk=36 textViews=83 reactTextViews=83
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="⁦11/15⁩" class=ReactTextView layout=StaticLayout w=108
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.350 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="" class=ReactTextView layout=BoringLayout w=72
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.350 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="" class=ReactTextView layout=BoringLayout w=72
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.350 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="1×" class=ReactTextView layout=StaticLayout w=43
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.350 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="لَا إِلَهَ إِلَّا ال" class=ReactTextView layout=StaticLayout w=984
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.350 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="None has the right t" class=ReactTextView layout=StaticLayout w=984
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.350 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="TRANSLITERATION" class=ReactTextView layout=StaticLayout w=371
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.350 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="" class=ReactTextView layout=BoringLayout w=48
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.350 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="VIRTUE & REFERENCE" class=ReactTextView layout=StaticLayout w=428
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.350 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="" class=ReactTextView layout=BoringLayout w=48
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.350 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="R" class=ReactTextView layout=StaticLayout w=31
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.350 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="T" class=ReactTextView layout=StaticLayout w=31
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.350 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.350 17466 17466 I INKFLAG :   found textview, text="—" class=ReactTextView layout=StaticLayout w=36
08-20 10:56:26.350 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="ٱللَّهُ لَآ إِلَٰهَ" class=ReactTextView layout=StaticLayout w=984
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="A" class=ReactTextView layout=StaticLayout w=21
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="‏ٱللَّهُ لَآ إِلَٰه" class=ReactTextView layout=StaticLayout w=668
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="L" class=ReactTextView layout=StaticLayout w=17
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="‏ ٱللَّهُ لَآ إِلَٰ" class=ReactTextView layout=StaticLayout w=558
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="‏ ٱلۡقَيُّومُۚ لَا ت" class=ReactTextView layout=StaticLayout w=935
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="‏ ٱلسَّمَٰوَٰتِ وَمَ" class=ReactTextView layout=StaticLayout w=726
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="‏ ٱلَّذِي يَشۡفَعُ ع" class=ReactTextView layout=StaticLayout w=697
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="‏ يَعۡلَمُ مَا بَيۡن" class=ReactTextView layout=StaticLayout w=851
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="‏ يُحِيطُونَ بِشَيۡء" class=ReactTextView layout=StaticLayout w=984
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="‏ ٱلسَّمَٰوَٰتِ وَٱل" class=ReactTextView layout=StaticLayout w=984
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="‏ ٱلۡعَلِيُّ ٱلۡعَظِ" class=ReactTextView layout=StaticLayout w=329
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="M" class=ReactTextView layout=StaticLayout w=28
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="1×" class=ReactTextView layout=StaticLayout w=43
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="آية الكرسي" class=ReactTextView layout=StaticLayout w=984
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="Ayatul Kursi" class=ReactTextView layout=StaticLayout w=243
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
08-20 10:56:26.351 17466 17466 I INKFLAG :     nudge ran: requestLayout+invalidate
08-20 10:56:26.351 17466 17466 I INKFLAG :   found textview, text="Al-Baqarah · Ayah 25" class=ReactTextView layout=StaticLayout w=381
08-20 10:56:26.351 17466 17466 I INKFLAG :     setters applied (useBoundsForWidth + shiftStartOverhang)
LAG : probe[setText(getText())]: DONE applied=83
```

### MANDATORY Reproducer

https://github.com/muhasabahhub/android-react-native-arabic

### Screenshots and Videos

<img width="1080" height="2340" alt="Image" src="https://github.com/user-attachments/assets/1e0d9767-651e-4274-ade3-ef375fdc2c9f" />

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Uh oh!

Android: leading glyph ink clipped at RTL (Arabic) line starts - API 35 fix exists (setShiftDrawingOffsetForStartOverhang) but TextLayoutManager never sets it; existing reflection handle has zero call sites #58064

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The fix that exists but is never called

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rtl-ink-clip-repro

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Expected

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Uh oh!

Android: leading glyph ink clipped at RTL (Arabic) line starts - API 35 fix exists (setShiftDrawingOffsetForStartOverhang) but TextLayoutManager never sets it; existing reflection handle has zero call sites #58064

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Description

Description

What we established

The fix that exists but is never called

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Screenshots

Steps to reproduce

rtl-ink-clip-repro

Repro steps

Expected

Actual

Likely cause

Likely cause

React Native Version

Affected Platforms

Output of npx @react-native-community/cli info

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MANDATORY Reproducer

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