ENH - Improved error message for interpolating IntegerArrays (#41565)
- [X] closes #41565
~~- [ ] tests added / passed~~
- [ ] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing.html#code-standards) for how to run them
- [X] whatsnew entry

This PR improves the error message when trying to interpolate dtype integer with method="linear", as discussed in #41565.
This pull request is stale because it has been open for thirty days with no activity. Please update or respond to this comment if you're still interested in working on this. Thanks for the pr, going to close for now as stale, but please ping to reopen if you'd like to continue working on it!