FIX: Create chamfer

[SMoraisAnsys]

Changes include:

• fixing the aedt code in object_3d.py and element_3d.py
• refactoring the chamfer method (f-string, check in symmetric case, improve error msg)
• removing test duplicate
• improve test on chamfer

Follow up of #5394

Close #5423

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[SMoraisAnsys]

@cathaychris If you have some time, could you test the current changes to see if they fit your needs?
I'll double check the changes tomorrow but they seemed to be working locally.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.39%. Comparing base (aa3f648) to head (1638005).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5419   +/-   ##
=======================================
  Coverage   84.38%   84.39%           
=======================================
  Files         140      140           
  Lines       58661    58669    +8     
=======================================
+ Hits        49504    49514   +10     
+ Misses       9157     9155    -2     

[cathaychris]

@SMoraisAnsys Yes, it seems to work with both chamfer_type=2 and chamfer_type=3 now, thank you.

[Samuelopez-ansys]

Great! Good job