Fixes to preview load to determine if production decomposition applies

[isc-pbarton]

Fixes #766
Fixes #753

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 16.66667% with 10 lines in your changes missing coverage. Please review.

Project coverage is 41.22%. Comparing base (1b8317d) to head (216c8e0).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
cls/SourceControl/Git/Production.cls	0.00%	10 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #767   +/-   ##
=======================================
  Coverage   41.21%   41.22%           
=======================================
  Files          24       24           
  Lines        3220     3229    +9     
=======================================
+ Hits         1327     1331    +4     
- Misses       1893     1898    +5     

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