Backport PR #43152 on branch 1.3.x (BUG: Outer/right merge with EA dtypes cast to object)
Backport PR #43152: BUG: Outer/right merge with EA dtypes cast to object
Is this because, maybe `any_numeric_ea_dtype` is not defined in 1.3.x? Hello @meeseeksmachine! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:





There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers: 

##### Comment last updated at 2021-09-04 18:47:28 UTC Rats. The line got too long when I updated the name in the web editor. I'll fix it if all other CI passes. @github-actions pre-commit thanks @debnathshoham  and @lithomas1 