Steps to replicate the issue (include links if applicable):
In a language with diacritics (using French in this example) view the country dropdown in Special:EnableEventRegistration or Special:EditEventRegistration, which is sorted alphabetically
What happens?:
Diacritics are sorted to the end of the alphabet, after all letters without diacritics.
What should have happened instead?:
Letters with diacritics should be sorted in the appropriate order.
So in the above in the image (using French) Bénin should go after Belize, and Côte d'Ivoire should go after Costa Rica, etc.
Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):
Other information (browser name/version, screenshots, etc.):
| Bénin in incorrect place | Côte d'Ivoire in incorrect place |
 |  |
