Add predictive back animation to Bouncer.

Bug: 238475429
Test: atest KeyguardSecurityContainerControllerTest
Test: atest KeyguardSecurityContainerTest
Test: atest StatusBarKeyguardViewManagerTest
Test: Enable flags and swipe back on Bouncer. Change up security mode and make sure animation looks nice in all modes.

Merged-In: Iaf0c265076bc4a917d9826beee74b9c3a635ef33
Change-Id: Iaf0c265076bc4a917d9826beee74b9c3a635ef33