BUG: Don't raise TypeError when converting NA from string to numeric
- [x] closes #37262
- [x] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry

Thanks @dsaxton. It's probably fine to fix it like this in the short term, since a proper fix to actually refactor the `maybe_convert_numeric` to produce nullable results is a bigger change? > Thanks @dsaxton. It's probably fine to fix it like this in the short term, since a proper fix to actually refactor the `maybe_convert_numeric` to produce nullable results is a bigger change?

That was my thinking, remove the error now then "enhance" to cast to nullable as a follow-up. I can open a separate issue for that if that makes sense? thanks @dsaxton very nice