FIX: Use regex to check installed ansysem versions

[skandak-ansys]

Using regex to check for installed ansysem version will prevent unexpected issues.
For example, when an env var named ANSYSEM_ROOT_PATH is present, instantiating a Hfss3dLayout or a desktop object was failing. This is now fixed
Fixes #6452
Fixes #6430

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.45%. Comparing base (eb196b3) to head (d2a310a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6453      +/-   ##
==========================================
+ Coverage   76.69%   82.45%   +5.76%     
==========================================
  Files         230      230              
  Lines       73681    73678       -3     
==========================================
+ Hits        56506    60748    +4242     
+ Misses      17175    12930    -4245     

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[SMoraisAnsys]

@skandak-ansys @Samuelopez-ansys I've extended the PR because there was another issue that this PR and linked issues highlighted. The previous changes didn't directly handle the problem but they strengthen the way to retrieve the versions so LGTM :)