BENCH : Added benchmark for indexing with .loc for sorted/unsorted DatetimeIndex
- [x] closes #38690

@github-actions pre-commit @mzeitlin11 
Please review the PR 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. pls merge master and update to comments @github-actions pre-commit @sonalprabhu can you merge master again. i think this PR is failing the asv's themselves, so pls test locally. Thanks for the PR but it appears to have gone stale. If interested in continuing please merge the main branch and address the failing benchmark  and we can reopen. 