fix: DIA-2028: [BE] Membership API call for organization with ID=2574 results in ERROR 500 on develop

[nick-skriabin]

Fixing an issues introduced by #7100 with Membership API responding with 500 error.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.18%. Comparing base (0aec72b) to head (af0d0fc).
Report is 4 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #7203   +/-   ##
========================================
  Coverage    77.17%   77.18%           
========================================
  Files          187      187           
  Lines        14499    14502    +3     
========================================
+ Hits         11190    11193    +3     
  Misses        3309     3309           

Flag	Coverage Δ
pytests	77.18% <100.00%> (+<0.01%)	⬆️

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