Fix wrong bouncer translation during hint animation

It's not correct to assume that the bouncer translation is 0 when the
unlock hint animation is running. The correct translation is 1 since
the view is completely hidden.

FalsingManager was receiving the wrong bouncer state, and this caused
the rejection swipe gestures.

Change-Id: I7c48a326f054a2c09809e5a1096ca42907472eac
Fixes: 78108854
Test: tap on scrim, swipe notification
Test: turn on flasing logs, look at logcat
Test: go/sysui-bouncer-tests