Ensure that FalsingManager is not active when phone unlocked.

If the phone owner does not have a password setup, the FalsingManager
can be left registered when it should not be. This resolves that
issue.

Bug: 147340089
Test: atest SystemUITests && manual
Change-Id: I7fe925668561d31ab0191d4d97c5d22e110d4675
5 files changed