fix: UTC-18: Respect users httpx client for token refresh

[robot-ci-heartex]

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Please ensure that all linked upstream Pull Requests are merged before proceeding with this one.

• fix: UTC-18: Respect users httpx client for token refresh label-studio-sdk#464

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.81%. Comparing base (a56a3b9) to head (b9bfc26).
Report is 6 commits behind head on develop.

⚠️ Parser warning

The parser emitted a warning. Please review your JUnit XML file:

Warning while parsing testcase attributes: Limit of string is 1000 chars, for name, we got 1222 at 1:45997 in /home/runner/work/label-studio/label-studio/label_studio/functional.xml

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #7572      +/-   ##
===========================================
+ Coverage    77.77%   77.81%   +0.04%     
===========================================
  Files          197      197              
  Lines        15887    15887              
===========================================
+ Hits         12356    12363       +7     
+ Misses        3531     3524       -7     

Flag	Coverage Δ
pytests	77.81% <ø> (+0.04%)	⬆️

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