Chore: mark handle_chunks as non-async

[alexpyattaev]

Problem

Function does not need to be async

Summary of Changes

rm async to improve readability

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.4%. Comparing base (94eb488) to head (5eece92).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##           master    #7700     +/-   ##
=========================================
- Coverage    83.4%    83.4%   -0.1%     
=========================================
  Files         813      813             
  Lines      366220   366216      -4     
=========================================
- Hits       305691   305672     -19     
- Misses      60529    60544     +15     

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