TYP: avoid inherit_names for DatetimeIndexOpsMixin
new version of #48015



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 to @jbrockmendel's #50532 this PR got much simpler :) (`freq` was causing the most changes). thanks @twoertwein 