statistics: GCStats should not wrongly remove record of an existing table (#58108)

[ti-chi-bot]

This is an automated cherry-pick of #58108

What problem does this PR solve?

Issue Number: close #57983

Problem Summary:

When we try to delete the stats. We need to first ensure that the table is already deleted.

What changed and how does it work?

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.

修复统计信息垃圾回收时可能错误的删除统计信息记录的问题
Fix the issue that the stat' GC process may wrongly delete records of statistics.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, qw4990

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-12-12 05:48:32.89925365 +0000 UTC m=+503902.988056193: ☑️ agreed by hawkingrei.
• 2024-12-12 06:59:50.731195929 +0000 UTC m=+508180.819998472: ☑️ agreed by qw4990.

[hawkingrei]

/retest

[hawkingrei]

/retest

[hawkingrei]

/hold

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-7.5@0728f3f). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #58195   +/-   ##
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  Hits                   ?     298208           
  Misses                 ?      95116           
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Flag	Coverage Δ
unit	72.1487% <100.0000%> (?)

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

Components	Coverage Δ
dumpling	52.9400% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	53.5249% <0.0000%> (?)

[ti-chi-bot]

This cherry pick PR is for a release branch and has not yet been approved by triage owners.
Adding the do-not-merge/cherry-pick-not-approved label.

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