Fix adding and committing percent routines

[isc-pbarton]

Fixes #944

Manual testing in the container:

• initialize git repo with ##class(SourceControl.Git.API).Configure()
• Add a routine mapping in the USER namespace of %pbarton* to USER database
• From Git Web UI, export the VS Code workspace and open in VS Code
• Add a new routine %pbartontest.mac and save
• Check source control menus. It should have options to remove and commit. Test removing and then adding to Git, then committing. View git history to confirm it was committed

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 50.98%. Comparing base (f16c376) to head (a3d2b26).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #946   +/-   ##
=======================================
  Coverage   50.98%   50.98%           
=======================================
  Files          23       23           
  Lines        3138     3138           
=======================================
  Hits         1600     1600           
  Misses       1538     1538           

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[isc-dchui]

Looks good, just one thing