2d bug fix

[udaykusupati]

Description

2D GCP has a bug due to Edge2's active check being trivially loose.

Fixes # (issue)

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Test: Visualized gradients for a simple 2D example where dhat is greater than the object thickness. Spurious exterior gradients appear without the bug fix.

Checklist

• I have followed the project style guide
• My code follows the clang-format style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.85%. Comparing base (6e60a2d) to head (7b1e5c7).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #227   +/-   ##
=======================================
  Coverage   95.85%   95.85%           
=======================================
  Files         160      160           
  Lines       16661    16664    +3     
  Branches      946      947    +1     
=======================================
+ Hits        15970    15973    +3     
  Misses        691      691           

Flag	Coverage Δ
unittests	95.85% <100.00%> (+<0.01%)	⬆️

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[udaykusupati]

Added a new commit that should pass the tests for non-orientable case too