PERF: avoid unnecessary reordering in MultiIndex._reorder_indexer
- [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
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [x] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.
- [x] Added an entry in the latest `doc/source/whatsnew/v1.6.0.rst` file if fixing a bug or adding a new feature.


`MultiIndex._reorder_indexer` contains logic to determine if indexer reordering is required. This PR expands the logic a bit to identify additional cases where reordering is not necessary.

ASVs: 

```
       before           after         ratio
     [4b645ae5]       [07679a60]
     <main>           <multiindex-need-sort>
-        5.07±1ms          726±9μs     0.14  indexing.MultiIndexing.time_loc_all_bool_indexers(True)
-        8.13±2ms         709±20μs     0.09  indexing.MultiIndexing.time_loc_all_bool_indexers(False)
```
Thanks @lukemanley 