session: fix the memory tracker leak in prepare binary protocol (#44618)

[XuHuaiyu]

close #44612

What problem does this PR solve?

Issue Number: close #xxx

Problem Summary:

What is changed and how it works?

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

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None

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, wshwsh12

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-10-17 06:14:20.417547262 +0000 UTC m=+1724058.004657403: ☑️ agreed by wshwsh12.
• 2023-10-17 06:14:24.813746935 +0000 UTC m=+1724062.400857065: ☑️ agreed by hawkingrei.

[XuHuaiyu]

/merge

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-6.5-20230706-v6.5.3@1651612). Click here to learn what that means.
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Additional details and impacted files

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