[refactor](lance) Group Lance scan parameters in Thrift

[zhangstar333]

What problem does this PR solve?

Problem Summary:
Group Lance-specific scan-node parameters into TLanceScanParams and update the FE/BE access paths.
Keep TFileScanRangeParams clean and make Lance scan parameters easier to extend.

Release note

None

Check List (For Author)

• Test

  • Regression test
  • Unit Test
  • Manual test (add detailed scripts or steps below)
  • No need to test or manual test. Explain why:
    • This is a refactor/code format and no logic has been changed.
    • Previous test can cover this change.
    • No code files have been changed.
    • Other reason

• Behavior changed:

  • No.
  • Yes.

• Does this need documentation?

  • No.
  • Yes.

Check List (For Reviewer who merge this PR)

• Confirm the release note
• Confirm test cases
• Confirm document
• Add branch pick label

[hello-stephen]

Thank you for your contribution to Apache Doris.
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Please clearly describe your PR:

1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
3. What features were added. Why was this function added?
4. Which code was refactored and why was this part of the code refactored?
5. Which functions were optimized and what is the difference before and after the optimization?

[zhangstar333]

run buildall

[hello-stephen]

Cloud UT Coverage Report

Increment line coverage 🎉

Increment coverage report
Complete coverage report

Category	Coverage
Function Coverage	77.24% (1911/2474)
Line Coverage	64.32% (34165/53120)
Region Coverage	51.88% (32721/63071)
Branch Coverage	54.17% (9988/18438)

[hello-stephen]

FE UT Coverage Report

Increment line coverage 0.00% (0/12) 🎉
Increment coverage report
Complete coverage report

[zhangstar333]

run buildall

[hello-stephen]

Cloud UT Coverage Report

Increment line coverage 🎉

Increment coverage report
Complete coverage report

Category	Coverage
Function Coverage	77.24% (1911/2474)
Line Coverage	64.33% (34170/53120)
Region Coverage	51.87% (32716/63071)
Branch Coverage	54.15% (9985/18438)

[hello-stephen]

BE UT Coverage Report

Increment line coverage 100.00% (28/28) 🎉

Increment coverage report
Complete coverage report

Category	Coverage
Function Coverage	59.32% (25593/43146)
Line Coverage	43.82% (261480/596684)
Region Coverage	39.77% (207108/520813)
Branch Coverage	41.27% (95566/231576)

[hello-stephen]

BE Regression && UT Coverage Report

Increment line coverage 100.00% (28/28) 🎉

Increment coverage report
Complete coverage report

Category	Coverage
Function Coverage	74.07% (31138/42038)
Line Coverage	58.28% (345141/592191)
Region Coverage	54.98% (287050/522091)
Branch Coverage	55.93% (129375/231310)

[hello-stephen]

FE Regression Coverage Report

Increment line coverage 83.33% (10/12) 🎉
Increment coverage report
Complete coverage report