REF: stop passing self as arg from ExtensionArray methods
- [x] closes #46843
- [ ] All [code checks passed].
- [x] Added [type annotations] to new arguments/methods/functions.

🐼


Hello @brunocoutinhoo! 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 2022-07-10 01:01:23 UTC This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this. Thanks for the pull request, but it appears to have gone stale. If interested in continuing, please merge in the main branch, address any review comments and/or failing tests, and we can reopen. To be fair, it's also from our side that the feedback is limited / unclear. We should maybe update https://github.com/pandas-dev/pandas/issues/46843 to be clearer about what the issue actually proposes the change (or close it if it is no longer actionable)