Help Pint-Pandas pass tests when HAS_UNCERTAINTIES is enabled
The Pint-Pandas testsuite relies on the Pandas test suite.  In the process of enabling support for uncertainties in Pint-Pandas, I discovered places where the base Pandas test suite needs to follow along.  I will extract the interesting test cases that triggered the need for these patches.

Signed-off-by: MichaelTiemann <72577720+MichaelTiemannOSC@users.noreply.github.com>

- [ ] closes #xxxx (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [ ] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.
- [ ] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.

thanks for your pr - closing as per the above

if there's a bug in pandas, please open an issue with a reproducible example and it can be addressed