This PR makes it so the devices are always sorted in this order (by default):
1. Has Pending Auth Request (if any) comes first
2. Current Device comes second (or first if there are no pending auth requests)
3. First Login Date - the rest of the devices are sorted by first login date (newest to oldest)
This sort order is preserved even after a user approves/denies and auth request - that is, the approved/denied device will re-sort to its correct position according to it's first login date.
Feature Flag: `PM14938_BrowserExtensionLoginApproval`
c5e5417abf