fix: fix the GC job index data race

[chlins]

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Comprehensive Summary of your change

Issue being fixed

Fixes #(issue)

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[wy65701436]

lgtm

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.16%. Comparing base (c8c11b4) to head (5ae184f).
Report is 257 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #20830      +/-   ##
==========================================
+ Coverage   45.36%   46.16%   +0.79%     
==========================================
  Files         244      247       +3     
  Lines       13333    13779     +446     
  Branches     2719     2845     +126     
==========================================
+ Hits         6049     6361     +312     
- Misses       6983     7088     +105     
- Partials      301      330      +29     

Flag	Coverage Δ
unittests	46.16% <ø> (+0.79%)	⬆️

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see 491 files with indirect coverage changes