Requirement Boolean Negation Fix

[Eric-Vin]

Description

Fixes an issue where not inside a requirement is not handled correctly.

Issue Link

#286

Checklist

• I have tested the changes locally via pytest and/or other means
• I have added or updated relevant documentation
• I have autoformatted the code with black and isort
• I have added test cases (if applicable)

Additional Notes

N/A

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.30%. Comparing base (d7679fb) to head (742f4a7).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #289      +/-   ##
==========================================
- Coverage   91.32%   91.30%   -0.03%     
==========================================
  Files          54       54              
  Lines       13515    13540      +25     
==========================================
+ Hits        12343    12363      +20     
- Misses       1172     1177       +5     

Files	Coverage Δ
src/scenic/core/requirements.py	95.23% <100.00%> (+0.03%)	⬆️
src/scenic/syntax/compiler.py	98.47% <100.00%> (+0.02%)	⬆️

... and 7 files with indirect coverage changes

[abanuelo]

Looks great to me!

[dfremont]

Looks great, just one stylistic nit.