Revert "Remove ScrimController from BiometricUnlockController"

Revert submission 20691780-cherrypick-modernize_alt_bouncer-2av1xvqe7q

Reason for revert: breaking build (see b/262237315)
Reverted Changes:
Ic4c4837cd:Remove ScrimController from BiometricUnlockControl...
I041db358a:Add entry for modern alternate bouncer toggle
I400a27e8f:Update ArcSBKVM constructor
Ia975fd65d:Modernize alternate bouncer logic
I0e15b8796:Update constructors

Change-Id: If24ae9d9fe1035e2af5b9c822cd1f66128f11823