Ensure proper env var for progress muting

[munrojm]

No description provided.

[codecov-commenter]

Codecov Report

Merging #546 (2450635) into main (bc3094c) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #546      +/-   ##
==========================================
+ Coverage   92.51%   92.52%   +0.01%     
==========================================
  Files          34       34              
  Lines        1322     1324       +2     
==========================================
+ Hits         1223     1225       +2     
  Misses         99       99              

Impacted Files	Coverage Δ
src/mp_api/core/settings.py	100.00% <100.00%> (ø)

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