ENH: adding datetime default output formatting in Styler
- [x] partly addresses #46755
- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [ ] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.

Will add any further necessaries if this PR is considered worthwhile.
Hmm I'd be +0 for this inclusion. It's not entirely clear to me how this differs from just calling `dt.strftime` beforehand 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. Closing as doesn't seem to have much traction.. might revisit later..