BUG: Series[bool].__setitem__(BooleanArray)
- [ ] closes #xxxx
- [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
- [x] whatsnew entry

hmm can you fix the conflict and rebase; this *might* break on the `_hasna` change rebased + green