Improve _match_and_rank_thermostats() as suggested #6026

Job	Run time
Cache identify	4s
Shellcheck	4s
Dependency	4s
Prepare	10s
Ruff check and force	10s
Check commit	21s
Run pytest using Python 3.14	18s
Run pytest using Python 3.13	20s
Run mypy	12s
Process test coverage	20s
Process test complexity	11s
Build and publish Python 🐍 distributions 📦 to TestPyPI	10s
	2m 24s

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