NodeCache init: remove empty string #2050

Job	Run time
Shellcheck	7s
Dependency	6s
Prepare	46s
Ruff check and force	10s
Check commit	42s
Create pytest cache for Python 3.13	5s
Run pytest using Python 3.13	19s
Process test coverage	14s
Run mypy	6s
Process test complexity	7s
Build and publish Python 🐍 distributions 📦 to TestPyPI	22s
	3m 4s

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