NodeCache init: remove empty string #2046

Job	Run time
Prepare	59s
Dependency	6s
Shellcheck	5s
Ruff check and force	8s
Check commit	43s
Create pytest cache for Python 3.13	8s
Run pytest using Python 3.13	26s
Process test coverage	13s
Run mypy	7s
Process test complexity	10s
Build and publish Python 🐍 distributions 📦 to TestPyPI	23s
	3m 28s

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