Handle waking from unlock in KeyguardViewMediator.

This changelist moves logic to sequence waking from a dream after unlock
previously added to BiometricUnlockController to KeyguardViewMediator.
Placing this logic in the common path ensures the sequencing for all
authentication when dreaming.

Fixes: 289861878
Test: atest KeyguardViewMediatorTest#testWakeAndUnlockingOverDream
Test: atest KeyguardViewMediatorTest#testWakeAndUnlockingOverDream_signalAuthenticateIfStillShowing
Test: atest BiometricsUnlockControllerTest#onSideFingerprintSuccess_dreaming_unlockNoWake
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:3aa54b2e0f1eb677ea4e6efd32f6d31091254910)
Merged-In: Ia6fa9681be950adc1b9aae6f7abcd4d7f19db156
Change-Id: Ia6fa9681be950adc1b9aae6f7abcd4d7f19db156