FIX: GeometryModeler.create_air_region()

[Devin-Crawford]

This method was operating incorrectly. See issue #4972

[ansys-reviewer-bot]

Thanks for opening a Pull Request. If you want to perform a review write a comment saying:

@ansys-reviewer-bot review

[maxcapodi78]

Good catch

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.66%. Comparing base (953f428) to head (5027d68).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4978   +/-   ##
=======================================
  Coverage   83.65%   83.66%           
=======================================
  Files         121      121           
  Lines       54793    54793           
=======================================
+ Hits        45838    45843    +5     
+ Misses       8955     8950    -5     

[SMoraisAnsys]

@dcrawforAtAnsys I took the liberty to rerun a job of the CI as it failed because of something from vtk side (URL https://wheels.vtk.org was not reached)