fix: correct detection of wrapper shim on Windows/venv #54

Job	Run time
Type Check	12s
Test npx fallback (py3.12, windows-latest)	3m 8s
Test (py3.9, ubuntu-latest)	1m 45s
Test (py3.13, ubuntu-latest)	1m 39s
Test (py3.9, windows-latest)	3m 45s
Test npx fallback (py3.12, ubuntu-latest)	1m 32s
Test (py3.13, windows-latest)	3m 46s
Build Package	13s
Lint and Format	8s
CI Success	3s
	16m 11s

Provide feedback