Move handling of special cases to helper-function #5006

Job	Run time
Dependency	6s
Shellcheck	4s
Prepare	1m 0s
Ruff check and force	5s
Check commit	31s
Create pytest cache for Python 3.12	6s
Run pytest using Python 3.12	17s
Process test coverage	17s
Run mypy	10s
Process test complexity	10s
Build and publish Python 🐍 distributions 📦 to TestPyPI	0s
	2m 46s

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