Show UDFPS icon on AOD even if fp auth isn't running

* shows udfps if it's enrolled on AOD even if:
   * device requires strong auth (ie: after reboot, lockdown)
   * device is unlocked via smart lock

On click of the udfps icon in the above cases:
  * If the device is locked, the bouncer will show.
  * If the device is unlocked, the user will enter the device.

Fixes: 198315404
Test: manual
Change-Id: Id766df8f77427ae1db672507716bd38dc3462452
Merged-In: Id766df8f77427ae1db672507716bd38dc3462452
(cherry picked from commit c06bb2d2)