[release-20.0] Fix Data race in semi-join (#17417)

[vitess-bot]

Description

This is a backport of #17417

[vitess-bot]

Hello @GuptaManan100, there are conflicts in this backport.

Please address them in order to merge this Pull Request. You can execute the snippet below to reset your branch and resolve the conflict manually.

Make sure you replace origin by the name of the vitessio/vitess remote

git fetch --all
gh pr checkout 17446 -R vitessio/vitess
git reset --hard origin/release-20.0
git cherry-pick -m 1 c25802da2ac3c49fe8c60d5107790813e1ef060c

[vitess-bot]

Review Checklist

Hello reviewers! 👋 Please follow this checklist when reviewing this Pull Request.

General

• Ensure that the Pull Request has a descriptive title.
• Ensure there is a link to an issue (except for internal cleanup and flaky test fixes), new features should have an RFC that documents use cases and test cases.

Tests

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Backward compatibility

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• If a flag is removed, then it should also be removed from vitess-operator and arewefastyet, if used there.
• vtctl command output order should be stable and awk-able.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.43%. Comparing base (722cbbd) to head (5bedd01).

Additional details and impacted files

@@               Coverage Diff                @@
##           release-20.0   #17446      +/-   ##
================================================
+ Coverage         66.40%   66.43%   +0.02%     
================================================
  Files              1541     1541              
  Lines            244092   244094       +2     
================================================
+ Hits             162098   162159      +61     
+ Misses            81994    81935      -59     

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