Contacts/Circles - Sort by Ownership first, alphabetically second

[sorbaugh]

Instead of the Circles section being just one list sorted alphabetically, the list should first have the ones you are owner/admin of, then member of, then the rest. Individually these can be sorted alphabetically.

The icons on the left are all the same now, would be good to adjust:
owned/admin: https://pictogrammers.com/library/mdi/icon/account-star/
member: https://pictogrammers.com/library/mdi/icon/account-group/
all others: https://pictogrammers.com/library/mdi/icon/account-group-outline/

This would already make it much more directly obvious which Circles you are member of, without needing to resort to search either.

• Add sorting by owner first, alphabetical second in backend #40835
• With new backend logic done, implement changes on the frontend #40836