Improved behavior for commits when attribution settings are not configured

[isc-akadoo]

Fixes #450

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 37.14286% with 22 lines in your changes missing coverage. Please review.

Project coverage is 32.05%. Comparing base (6ad5fe0) to head (21e5044).
Report is 14 commits behind head on main.

Files with missing lines	Patch %	Lines
cls/SourceControl/Git/Utils.cls	44.00%	14 Missing ⚠️
cls/SourceControl/Git/Extension.cls	20.00%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #512      +/-   ##
==========================================
+ Coverage   25.06%   32.05%   +6.98%     
==========================================
  Files          18       18              
  Lines        2541     3107     +566     
==========================================
+ Hits          637      996     +359     
- Misses       1904     2111     +207     

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[isc-tleavitt]

See feedback; also, as I'd said via Teams: It would also be helpful to produce some output on initial connection (via VSCode/Studio - this is the Type = 1, Name = 5 block in SourceControl.Git.Extension:UserAction) to provide an earlier warning.