Disable PLUS_ADDRESS(_SETTING) for Dasher users

Adds a precondition in PlusAddressModelTypeController that disables the
data types for Dasher users. To determine the accounts managed state, a
signin::AccountManagedStatusFinder is used. Whenever the signed in
account changes (determined using a sync service observer), the
account's managed status is recomputed.

Bug: 354688446
Change-Id: Ib99730e6e1b988de8e7557cad3e2f581fcaae36c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5735132
Reviewed-by: Rushan Suleymanov <rushans@google.com>
Reviewed-by: Jan Keitel <jkeitel@google.com>
Commit-Queue: Florian Leimgruber <fleimgruber@google.com>
Code-Coverage: findit-for-me@appspot.gserviceaccount.com <findit-for-me@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1334135}