br: make table existence check unified on different br client (#58211)

[ti-chi-bot]

This is an automated cherry-pick of #58211

What problem does this PR solve?

Issue Number: close #58168

Problem Summary:

What changed and how does it work?

Remove the client check of tableExistenceCheck, now it works on both sql and cli client.

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-6.5@cd63397). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-6.5     #58263   +/-   ##
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  Coverage               ?   73.6385%           
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  Files                  ?       1098           
  Lines                  ?     353630           
  Branches               ?          0           
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  Hits                   ?     260408           
  Misses                 ?      76482           
  Partials               ?      16740           

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• OWNERS [Leavrth,YuJuncen]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-02-18 07:14:10.337643204 +0000 UTC m=+945492.733865264: ☑️ agreed by YuJuncen.
• 2025-02-18 07:42:09.560055591 +0000 UTC m=+947171.956277653: ☑️ agreed by Leavrth.