Update python debug detection for new version of debugpy

[mdemoret-nv]

Description

Looks like the library debugpy was updated to use cython instead of python. This broke our system of detecting when a debugger is attached.

This PR just changes the detection system to use str(sys.gettrace()) instead of sys.gettrace().__module__ since __module__ is no longer set. The effect will still be the same.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[cwharris]

What's with init.sh changing?

[codecov]

Codecov Report

Merging #322 (4f4f7cd) into branch-23.07 (92aa21a) will not change coverage.
The diff coverage is 0.00%.

Additional details and impacted files

@@              Coverage Diff              @@
##           branch-23.07     #322   +/-   ##
=============================================
  Coverage         73.24%   73.24%           
=============================================
  Files               390      390           
  Lines             13380    13380           
  Branches           1010     1009    -1     
=============================================
  Hits               9800     9800           
  Misses             3580     3580           

Flag	Coverage Δ
cpp	69.07% <0.00%> (ø)
py	42.22% <0.00%> (ø)

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Impacted Files	Coverage Δ
python/mrc/_pymrc/src/system.cpp	64.10% <0.00%> (ø)

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[mdemoret-nv]

What's with init.sh changing?

@cwharris It was missing chmod +x in the file permissions so you got an error every time you tried to build the dev container.

[mdemoret-nv]

/merge