Revert use of None in subscribe to response #1709

Job	Run time
Shellcheck	7s
Prepare	53s
Dependency	3s
Ruff check and force	9s
Check commit	44s
Create pytest cache for Python 3.13	5s
Run pytest using Python 3.13	20s
Run mypy	9s
Process test coverage	10s
Process test complexity	7s
Build and publish Python 🐍 distributions 📦 to TestPyPI	18s
	3m 5s

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