Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/33893
The previous diff was breaking the external CI tests on Windows because of the file separators.
The fix was to use UNIX separator but to apply `path.normalize` to make sure that the path is platform agnostic.
## Changelog
[General][Fixed] - Make tests pass for windows
Reviewed By: cortinico
Differential Revision: D36597593
fbshipit-source-id: 47731f34a08c778268a6cc9674257403985d4599