fix hang on 3xx response with large body

[KhafraDev]

fixes #5728

you would not believe how long it took to track this down (idek if this is the proper fix)

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.85%. Comparing base (16395ea) to head (1b4a9ba).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5850      +/-   ##
==========================================
- Coverage   93.85%   93.85%   -0.01%     
==========================================
  Files         110      110              
  Lines       39882    39879       -3     
==========================================
- Hits        37432    37429       -3     
  Misses       2450     2450              

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