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 41.21%. Comparing base (88fb29b) to head (7d52f33).

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   41.30%   41.21%   -0.09%     
==========================================
  Files          24       24              
  Lines        3213     3222       +9     
==========================================
+ Hits         1327     1328       +1     
- Misses       1886     1894       +8     

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.