[BUG]: Improve the execution time of SharedProcessPool related unit tests

[yczhang-nv]

Version

24.10

Which installation method(s) does this occur on?

Docker, Conda, Source

Describe the bug.

As a part of efforts to resolve #1948, the execution of SharedProcessPool related unit tests can be faster by removing unnecessary setup and tear down of the process pool during the test process.

Minimum reproducible example

No response

Relevant log output

Click here to see error details

[Paste the error here, it will be hidden by default]

Full env printout

Click here to see environment details

[Paste the results of print_env.sh here, it will be hidden by default]

Other/Misc.

No response

Code of Conduct

• I agree to follow Morpheus' Code of Conduct
• I have searched the open bugs and have found no duplicates for this bug report