TST: Adding test to test_numeric, #37348
- [x] closes #37348
- [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

This makes sure that comparing int to empty strings doesn't return an error.
