Add CirclePlusAllowJoiningRequest with response to RESPONSE_MESSAGES #1486

Job	Run time
Prepare	53s
Shellcheck	4s
Dependency	6s
Ruff check and force	9s
Check commit	45s
Create pytest cache for Python 3.13	10s
Run pytest using Python 3.13	23s
Process test coverage	14s
Run mypy	9s
Build and publish Python 🐍 distributions 📦 to TestPyPI	23s
Process test complexity	10s
	3m 26s

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