executor: fix forget to release session (#56299)

[ti-chi-bot]

This is an automated cherry-pick of #56299

What problem does this PR solve?

Issue Number: close #56271

Problem Summary:

What changed and how does it work?

Check List

Tests

• Unit test
• Integration test
• Manual test WIP
• 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

[Benjamin2037]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Benjamin2037, lance6716

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-09-26 11:01:14.228316796 +0000 UTC m=+1736543.968740735: ☑️ agreed by Benjamin2037.
• 2024-09-26 12:00:49.770389935 +0000 UTC m=+1740119.510813908: ☑️ agreed by lance6716.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-7.5@8e57797). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #56342   +/-   ##
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  Coverage               ?   72.0096%           
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  Files                  ?       1415           
  Lines                  ?     412410           
  Branches               ?          0           
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  Hits                   ?     296975           
  Misses                 ?      95540           
  Partials               ?      19895           

Flag	Coverage Δ
unit	72.0096% <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	53.5356% <0.0000%> (?)