Hide keyguard when SIM transitions to READY

The keyguard is not properly updated when the SIM PIN verification is
performed using different means than the UI. Additional states are used
before READY, so simWasLocked might be false.

Bug: 160784387
Test: manual
Change-Id: Ibca04e3d6a61c27d4b40f94a8a6223d9739b15ac
Merged-In: Ibca04e3d6a61c27d4b40f94a8a6223d9739b15ac
(cherry picked from commit d12075a9)