Replace fastUnlockTransition flag with bugfix flag

Remove the fast_unlock_transition flag and create a bugfix
faster_unlock_transition flag instead.

Flag: com.android.systemui.faster_unlock_transition
Bug: 298186160
Test: presubmit (no logic change)
Change-Id: I9a999d4fe66b79dff27b619eb00323a89cce55da
2 files changed