Fix S3 file storage import

[nikitabelonogov]

mirror for #6893

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[codecov]

Codecov Report

Attention: Patch coverage is 20.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 76.81%. Comparing base (67eb5f6) to head (18aecfb).
Report is 402 commits behind head on develop.

Files with missing lines	Patch %	Lines
label_studio/core/storage.py	25.00%	3 Missing ⚠️
label_studio/data_import/models.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #7318   +/-   ##
========================================
  Coverage    76.81%   76.81%           
========================================
  Files          171      171           
  Lines        14032    14035    +3     
========================================
+ Hits         10778    10781    +3     
  Misses        3254     3254           

Flag	Coverage Δ
pytests	76.81% <20.00%> (+0.13%)	⬆️

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