br: prevent br from becoming ddl owner

[Leavrth]

What problem does this PR solve?

Issue Number: close #63089

Problem Summary:
prevent br from becoming ddl owner

What changed and how does it work?

prevent br from becoming ddl owner

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 @Leavrth. Thanks for your PR.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.7393%. Comparing base (2010151) to head (c84894e).
⚠️ Report is 50 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #63090        +/-   ##
================================================
+ Coverage   72.8040%   74.7393%   +1.9353%     
================================================
  Files          1821       1839        +18     
  Lines        494529     496713      +2184     
================================================
+ Hits         360037     371240     +11203     
+ Misses       112638     102898      -9740     
- Partials      21854      22575       +721     

Flag	Coverage Δ
integration	46.1546% <100.0000%> (?)
unit	72.4887% <75.0000%> (+0.2210%)	⬆️

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

Components	Coverage Δ
dumpling	52.8700% <ø> (ø)
parser	∅ <ø> (∅)
br	63.1532% <100.0000%> (+16.8587%)	⬆️

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BornChanger, lance6716

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Needs approval from an approver in each of these files:

• br/OWNERS [BornChanger]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-08-20 07:42:03.966550874 +0000 UTC m=+425731.909726380: ☑️ agreed by lance6716.
• 2025-08-21 11:57:07.347190686 +0000 UTC m=+527435.290366202: ☑️ agreed by BornChanger.

[BornChanger]

/retest

[tiprow]

@BornChanger: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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[hawkingrei]

/retest

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #63246.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #63247.
But this PR has conflicts, please resolve them!

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #63248.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.5: #63249.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #63250.