fix: possible attribute error when adding __ex_id__

[lars-reimann]

Closes #93

Summary of Changes

• Treat numpy datatypes as primitive, so they don't get wrapped.
• Wrap the addition of the __ex_id__ into a try-except block to catch a potential attribute error.

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ PYTHON	black	2	0	0	0.64s
✅ PYTHON	mypy	2		0	2.34s
✅ PYTHON	ruff	2	0	0	0.03s
✅ REPOSITORY	git_diff	yes		no	0.02s

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (0f63b0c) to head (f8779bf).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #96   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           14        14           
  Lines          713       717    +4     
=========================================
+ Hits           713       717    +4     

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[lars-reimann]

🎉 This PR is included in version 0.13.1 🎉

The release is available on:

• v0.13.1
• GitHub release

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