API: make DataFrame.__boolop__ default_axis match DataFrame.__arithop__ default_axis
- [x] closes #36788
- [ ] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

Fix a test warning generated by an ipython test, unrelated
see fine, as to your original question i don't think we want the special case