BUG: df.iloc[:, 0] = df.iloc[::-1, 0] not setting inplace for EAs
- [x] closes #35417
- [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
- [x] whatsnew entry

@jreback gentle ping, this will let me get rid of some TODO/FIXMEs