br: fix br integration test (#53836)

[ti-chi-bot]

This is an automated cherry-pick of #53836

What problem does this PR solve?

Issue Number: close #53835

Problem Summary:

What changed and how does it work?

1. fix br integration test br_txn and br_full_ddl.
2. add br integration test for corruption of snapshot/log backup file.

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

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign mjonss for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-6.5@af6aa91). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-6.5     #56081   +/-   ##
================================================
  Coverage               ?   73.6131%           
================================================
  Files                  ?       1097           
  Lines                  ?     352914           
  Branches               ?          0           
================================================
  Hits                   ?     259791           
  Misses                 ?      76396           
  Partials               ?      16727