Refactor _missing_addresses_before() #1293

Job	Run time
Prepare	50s
Dependency	4s
Shellcheck	4s
Ruff check and force	5s
Check commit	43s
Create pytest cache for Python 3.11	6s
Create pytest cache for Python 3.12	7s
Run pytest using Python 3.12	21s
Run pytest using Python 3.11	20s
Run mypy	10s
Process test coverage	16s
Process test complexity	7s
Build and publish Python 🐍 distributions 📦 to TestPyPI	18s
	3m 31s

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