chore(app): Take a lock when trying to add a app

[Aradhya-Tripathi]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 45.22%. Comparing base (98bc36b) to head (32cdb92).
⚠️ Report is 12 commits behind head on develop.

Files with missing lines	Patch %	Lines
press/press/doctype/release_group/release_group.py	0.00%	2 Missing ⚠️

❌ Your patch check has failed because the patch coverage (33.33%) is below the target coverage (75.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #5010      +/-   ##
===========================================
- Coverage    45.22%   45.22%   -0.01%     
===========================================
  Files          846      846              
  Lines        68029    68030       +1     
  Branches       283      283              
===========================================
  Hits         30765    30765              
- Misses       37236    37237       +1     
  Partials        28       28              

Flag	Coverage Δ
dashboard	72.86% <ø> (ø)

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