[Web] Remove findNodeHandle function. (#3127)

## Description

`findNodeHandle` is a utility function that allows us to get native view from React component. The problem is, that under the hood it uses `findDOMNode`, which is deprecated and [will be removed in React 19](https://react.dev/reference/react-dom/findDOMNode). To get rid of this function, I've written our implementation that meets our requirements. 

Also, for new API we had to introduce a little trick (thanks @j-piasecki) - we add wrapper `div` with `display: contents;` style and we pass a ref to this element. With that change, it is much easier to get required `HTMLElement` - we simply have to get `div` from `ref` and find first child (preferably the one without `display: contents;`)

>[!WARNING]
> You may find tat in `StrictMode` most of new API examples doesn't work. That's not really the case. If you check example from [this comment](#3127 (comment)) it works fine. What really don't work in these examples are the animations.

## Test plan

Tested that example app works and no `findNodeHandle` error is thrown in `StrictMode`

src/findNodeHandle.ts

@@ -0,0 +1,3 @@
+import { findNodeHandle } from 'react-native';
+
+export default findNodeHandle;

src/findNodeHandle.web.ts

@@ -0,0 +1,33 @@
+type GestureHandlerRef = {
+  viewTag: GestureHandlerRef;
+  current: HTMLElement;
+};
+
+export default function findNodeHandle(
+  viewRef: GestureHandlerRef | HTMLElement
+): HTMLElement | number {
+  // Old API assumes that child handler is HTMLElement.
+  // However, if we nest handlers, we will get ref to another handler.
+  // In that case, we want to recursively call findNodeHandle with new handler viewTag (which can also be ref to another handler).
+  if ((viewRef as GestureHandlerRef)?.viewTag !== undefined) {
+    return findNodeHandle((viewRef as GestureHandlerRef).viewTag);
+  }
+
+  if (viewRef instanceof HTMLElement) {
+    if (viewRef.style.display === 'contents') {
+      return findNodeHandle(viewRef.firstChild as HTMLElement);
+    }
+
+    return viewRef;
+  }
+
+  // In new API, we receive ref object which `current` field points to  wrapper `div` with `display: contents;`.
+  // We want to return the first descendant (in DFS order) that doesn't have this property.
+  let element = viewRef?.current;
+
+  while (element && element.style.display === 'contents') {
+    element = element.firstChild as HTMLElement;
+  }
+
+  return element;
+}

src/handlers/createHandler.tsx

@@ -16,7 +16,8 @@ import {
   GestureEvent,
   HandlerStateChangeEvent,
 } from './gestureHandlerCommon';
-import { filterConfig, findNodeHandle, scheduleFlushOperations } from './utils';
+import { filterConfig, scheduleFlushOperations } from './utils';
+import findNodeHandle from '../findNodeHandle';
 import { ValueOf } from '../typeUtils';
 import { deepEqual, isFabric, isJestEnv, tagMessage } from '../utils';
 import { ActionType } from '../ActionType';

src/handlers/gestures/GestureDetector/Wrap.web.tsx

@@ -0,0 +1,41 @@
+import React, { forwardRef } from 'react';
+import type { LegacyRef, PropsWithChildren } from 'react';
+import { tagMessage } from '../../../utils';
+
+export const Wrap = forwardRef<HTMLDivElement, PropsWithChildren<{}>>(
+  ({ children }, ref) => {
+    try {
+      // I don't think that fighting with types over such a simple function is worth it
+      // The only thing it does is add 'collapsable: false' to the child component
+      // to make sure it is in the native view hierarchy so the detector can find
+      // correct viewTag to attach to.
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      const child: any = React.Children.only(children);
+
+      const clone = React.cloneElement(
+        child,
+        { collapsable: false },
+        // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
+        child.props.children
+      );
+
+      return (
+        <div
+          ref={ref as LegacyRef<HTMLDivElement>}
+          style={{ display: 'contents' }}>
+          {clone}
+        </div>
+      );
+    } catch (e) {
+      throw new Error(
+        tagMessage(
+          `GestureDetector got more than one view as a child. If you want the gesture to work on multiple views, wrap them with a common parent and attach the gesture to that view.`
+        )
+      );
+    }
+  }
+);
+
+// On web we never take a path with Reanimated,
+// therefore we can simply export Wrap
+export const AnimatedWrap = Wrap;

src/handlers/gestures/GestureDetector/index.tsx

@@ -6,7 +6,8 @@ import React, {
   useMemo,
   useRef,
 } from 'react';
-import { Platform, findNodeHandle } from 'react-native';
+import { Platform } from 'react-native';
+import findNodeHandle from '../../../findNodeHandle';
 import { GestureType } from '../gesture';
 import { UserSelect, TouchAction } from '../../gestureHandlerCommon';
 import { ComposedGesture } from '../gestureComposition';

src/handlers/gestures/GestureDetector/useDetectorUpdater.ts

@@ -1,5 +1,4 @@
 import React, { useCallback } from 'react';
-import { findNodeHandle } from 'react-native';
 import { GestureType } from '../gesture';
 import { ComposedGesture } from '../gestureComposition';
 
@@ -13,6 +12,7 @@ import { updateHandlers } from './updateHandlers';
 import { needsToReattach } from './needsToReattach';
 import { dropHandlers } from './dropHandlers';
 import { useForceRender, validateDetectorChildren } from './utils';
+import findNodeHandle from '../../../findNodeHandle';
 
 // Returns a function that's responsible for updating the attached gestures
 // If the view has changed, it will reattach the handlers to the new view

src/handlers/gestures/GestureDetector/useViewRefHandler.ts

@@ -3,7 +3,7 @@ import { getShadowNodeFromRef } from '../../../getShadowNodeFromRef';
 
 import { GestureDetectorState } from './types';
 import React, { useCallback } from 'react';
-import { findNodeHandle } from 'react-native';
+import findNodeHandle from '../../../findNodeHandle';
 
 declare const global: {
   isFormsStackingContext: (node: unknown) => boolean | null; // JSI function

src/web/tools/GestureHandlerWebDelegate.ts

@@ -1,4 +1,4 @@
-import { findNodeHandle } from 'react-native';
+import findNodeHandle from '../../findNodeHandle';
 import type IGestureHandler from '../handlers/IGestureHandler';
 import {
   GestureHandlerDelegate,