executor: fix goroutine leak when exceed quota in hash agg (#58078)

[ti-chi-bot]

This is an automated cherry-pick of #58078

What problem does this PR solve?

Issue Number: close #58004

Problem Summary:

What changed and how does it work?

Check List

Tests

• [ ] Unit test
• [ ] Integration test
• [x] 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

[ti-chi-bot]

@xzhangxian1008 This PR has conflicts, I have hold it. Please resolve them or ask others to resolve them, then comment /unhold to remove the hold label.

[xzhangxian1008]

/hold

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 80.00000% with 3 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-8.1@796f6a0). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.1     #61803   +/-   ##
================================================
  Coverage               ?   71.2230%           
================================================
  Files                  ?       1468           
  Lines                  ?     424211           
  Branches               ?          0           
================================================
  Hits                   ?     302136           
  Misses                 ?     101532           
  Partials               ?      20543           

Flag	Coverage Δ
unit	71.2230% <80.0000%> (?)

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

Components	Coverage Δ
dumpling	52.9656% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	41.4214% <0.0000%> (?)

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[xzhangxian1008]

/unhold

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: windtalker, xzhangxian1008

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• ~~OWNERS~~ [windtalker]

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[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2025-06-25 02:41:13.131926411 +0000 UTC m=+844325.855105394: :ballot_box_with_check: agreed by windtalker.
• 2025-06-27 01:17:17.583553405 +0000 UTC m=+1012090.306732386: :ballot_box_with_check: agreed by xzhangxian1008.