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]

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-01-08 08:16:33.115714911 +0000 UTC m=+341536.404546616: ☑️ agreed by hawkingrei.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

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