fix: avoid inspecting suspended processes

[germa89]

Description

As the title. Retrieving info from a suspended process was crashing the system.

Issue linked

Close #3209

Checklist

• I have visited and read Develop PyMAPDL.
• I have tested my changes locally
• I have added necessary documentation or updated existing documentation.
• I have followed the PyMAPDL coding style guidelines.
• I have added appropriate unit tests that also ensure the minimal coverage criteria.
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved to the PR if any.
• I have assigned this PR to myself.
• I have marked this PR as draft if it is not ready to be reviewed yet.
• I have made sure that the title of my PR follows Commit naming conventions (e.g. feat: adding new MAPDL command)

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Project coverage is 86.61%. Comparing base (587a0cb) to head (8cee416).
Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3227      +/-   ##
==========================================
+ Coverage   82.67%   86.61%   +3.94%     
==========================================
  Files          53       53              
  Lines        9625     9630       +5     
==========================================
+ Hits         7957     8341     +384     
+ Misses       1668     1289     -379     

[germa89]

Latest #3251 highlighted some parts of the code that wasn't tested. These issues have propagated here too, #3247 should fix them.

[germa89]

@pyansys-ci-bot LGTM.

[pyansys-ci-bot]

✅ Approving this PR because germa89 said so in here 😬