Adapt legacy set_switch_state() output typing #6261

Job	Run time
Dependency	4s
Shellcheck	7s
Cache identify	4s
Prepare	6s
Ruff check and force	10s
Check commit	21s
Run pytest using Python 3.13	20s
Run pytest using Python 3.14	21s
Run mypy	14s
Process test coverage	13s
Process test complexity	10s
Build and publish Python 🐍 distributions 📦 to TestPyPI	9s
	2m 19s

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