cp: fix: async_utils: explicit GC in persistent checkpoint worker loop (3591) into core_r0.16.0

[ko3n1g]

beep boop [🤖]: Hi @sbak5 👋,

we've cherry picked #3591 into  for you! 🚀

Please review and approve this cherry pick by your convenience!

[ko3n1g]

/ok to test fc1fd87

[copy-pr-bot]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.71%. Comparing base (04b6bf4) to head (fc1fd87).
⚠️ Report is 13 commits behind head on core_r0.16.0.

Additional details and impacted files

@@               Coverage Diff                @@
##           core_r0.16.0    #3628      +/-   ##
================================================
- Coverage         68.72%   68.71%   -0.01%     
================================================
  Files               339      339              
  Lines             44728    44741      +13     
================================================
+ Hits              30741    30746       +5     
- Misses            13987    13995       +8     

Flag	Coverage Δ
unit-test	68.71% <100.00%> (-0.01%)	⬇️

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