Legacy set_select: handle unused key argument #6314

Job	Run time
Shellcheck	6s
Cache identify	8s
Dependency	4s
Prepare	11s
Ruff check and force	11s
Check commit	28s
Run pytest using Python 3.13	22s
Run pytest using Python 3.14	14s
Run mypy	17s
Process test coverage	16s
Process test complexity	12s
Build and publish Python 🐍 distributions 📦 to TestPyPI	12s
	2m 41s

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