Move moments/test_moments_rolling_*.py tests to windows/test_rolling_*.py
- [x] tests added / passed
- [x] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit) for how to run them


A part of addressing (#37535), moving some tests under the window directory.
