Childcare subsidy programs should use *_before_lsr income variables to avoid LSR circular dependency

[hua7450]

Fixes #7024

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (ab00968) to head (19bcf6a).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##              main     #7027    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           15         8     -7     
  Lines          213        95   -118     
==========================================
- Hits           213        95   -118     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

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