REGR: sort_value can not sort levels with non nas and nans
- [ ] closes #xxxx (Replace xxxx with the Github issue number)
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cc @lukemanley 

open for suggestions if there is a more efficient way, but this raises right now while it did not before
#48495 handles this case (I just tested it). If we can merge #48495 I don't think we need this.  Can you add this specific test too? yep, added. Thx, will keep open till the other is merged. other pr was merged, so this is fixed