br: fix pitr system table inconsistency issue

[Tristan1900]

What problem does this PR solve?

Issue Number: close #60201

Problem Summary:

What changed and how does it work?

Prevent pitr to restore system table change during log backup,
only restore full snapshot to be consistent with previous version

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.

None

[tiprow]

Hi @Tristan1900. Thanks for your PR.

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[Tristan1900]

/hold
wait for tests

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.7645%. Comparing base (1c90ae7) to head (13bbd01).
Report is 11 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #60202        +/-   ##
================================================
+ Coverage   73.1634%   74.7645%   +1.6010%     
================================================
  Files          1708       1724        +16     
  Lines        471656     474320      +2664     
================================================
+ Hits         345080     354623      +9543     
+ Misses       105412      97725      -7687     
- Partials      21164      21972       +808     

Flag	Coverage Δ
integration	46.2996% <100.0000%> (?)
unit	72.3310% <12.5000%> (-0.0247%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.6910% <ø> (ø)
parser	∅ <ø> (∅)
br	62.3180% <100.0000%> (+15.0948%)	⬆️

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BornChanger, Leavrth

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Needs approval from an approver in each of these files:

• br/OWNERS [BornChanger,Leavrth]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-03-21 03:57:23.411566783 +0000 UTC m=+587137.095802879: ☑️ agreed by Leavrth.
• 2025-03-21 08:12:27.762987372 +0000 UTC m=+602441.447223468: ☑️ agreed by BornChanger.

[Leavrth]

/unhold

[Leavrth]

/ok-to-test

[Leavrth]

/retest

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-9.0-beta.1: #60210.