Fixes to instance-wide uncommitted queue

[isc-pbarton]

A number of fixes related to the instance-wide uncommitted queue:

• Fix sluggish performance if any namespace has a large number of uncommitted changes
• The locked file warning if a file is edited on this namespace now displays even if the instance-wide uncommitted check is disabled
• A decomposed production class no longer displays the instance-wide uncommitted warning as it is never relevant.

Resolves #547
Resolves #668

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

Attention: Patch coverage is 0% with 21 lines in your changes missing coverage. Please review.

Project coverage is 40.45%. Comparing base (8f69b52) to head (e1faca2).
Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
cls/SourceControl/Git/Extension.cls	0.00%	12 Missing ⚠️
cls/SourceControl/Git/Change.cls	0.00%	9 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #674   +/-   ##
=======================================
  Coverage   40.45%   40.45%           
=======================================
  Files          23       23           
  Lines        3137     3137           
=======================================
  Hits         1269     1269           
  Misses       1868     1868           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.