Incremental restore: fix the issue that backfill data is not covered by newTS (#54430)

[ti-chi-bot]

This is an automated cherry-pick of #54430

What problem does this PR solve?

Issue Number: close #54426

Problem Summary:
see #54426 (comment)

What changed and how does it work?

make sure the rewritten data cover the backfilled data.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

 fix the issue that backfill ddls(add index/modify column) may not restored correctly during incremental restore.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: 3pointer, BornChanger

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-11-11 03:34:22.964860423 +0000 UTC m=+240825.155729463: ☑️ agreed by BornChanger.
• 2024-11-11 06:28:51.30933711 +0000 UTC m=+251293.500206107: ☑️ agreed by 3pointer.

[3pointer]

/test unit-test

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[3pointer]

/test unit-test

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[3pointer]

/test unit-test

[tiprow]

@3pointer: No presubmit jobs available for pingcap/tidb@release-7.1

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/test unit-test

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-7.1@b51e9e7). Learn more about missing BASE report.

Additional details and impacted files

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##             release-7.1     #56904   +/-   ##
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