FIX: Downgrade log message when error occurs in ansysedt session search loop

[isaacwaldron]

Downgrade log message when an error occurs while iterating processes to search for ansysedt sessions. Rationale:

1. If any error occurs during the ansysedt session search process loop, the end result is that the process in question is not returned as a potential ansysedt session. This is generally not harmful.
2. There is nothing the user could have done to make the error not occur: they have no control over the processes on the machine, the behavior of psutil, or the logic in this loop.
3. Downgrading to debug allows us to also log the full stack trace of the exception, allowing us to identify fixes to the logic for cases that fail in the future.

Closes #6852

Description

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Issue linked

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Checklist

• I have tested my changes locally.
• I have added necessary documentation or updated existing documentation.
• I have followed the coding style guidelines of this project.
• I have added appropriate tests (unit, integration, system).
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved by the PR if any.
• I have agreed with the Contributor License Agreement (CLA).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.48%. Comparing base (1c8651a) to head (74dbbba).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6853      +/-   ##
==========================================
+ Coverage   83.28%   83.48%   +0.20%     
==========================================
  Files         245      245              
  Lines       77681    77681              
==========================================
+ Hits        64694    64851     +157     
+ Misses      12987    12830     -157     

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