Fix permissions update for VrListenerService on user changes.

- Fixes a bug where we would not update the
overlay restrictions if the VR listener we are bound to
changes bug the VR enabled state doesn't.
- Also fixed a case where the notification listener access
and location permission were not granted/revoked for the
correct user. For example, if a vr activity in one user calls
a VR activity in another (possible for cross profiles) we end
up not revoking the special access for the vr service in the
first user. The notification listener setting was also updated
for the system user instead of the user for which we grant/revoke
specal access.
- Properly remove the overlay restrictions for the old user
if we transition from a vr actiivty in one user to a vr activity
in a profile of this user.

Bug: 29273985
Change-Id: Ib1de6f2f5445001ac61edca5c77ea3a066544307