meta/autoid: make autoid client ResetConn operation concurrency-safe (#50522)

[tiancaiamao]

What problem does this PR solve?

Issue Number: close #50519

Problem Summary:

What changed and how does it work?

Cherry-pick #50522 for a 6.5.6 hotfix

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]

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[bb7133]

LGTM

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-01-21 01:22:31.678202445 +0000 UTC m=+664593.242500150: ☑️ agreed by xhebox.
• 2024-01-21 01:50:07.050824983 +0000 UTC m=+666248.615122685: ☑️ agreed by bb7133.

[ti-chi-bot]

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[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 ask for approval from tiancaiamao. For more information see the Kubernetes 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:

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-6.5-20231229-v6.5.6@b5a2eb8). Click here to learn what that means.
The diff coverage is n/a.

Additional details and impacted files

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##             release-6.5-20231229-v6.5.6     #50606   +/-   ##
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