Avoid keyguard fling transition interrupt for timing issue

For some low-end or bad performance devices, sometimes keyguard
flingToHeight animation still not complete, at this moment if received
the onStartedWakingUp while try turn screen on, it will cause the
remote SystemUI keyguard dismiss transition can't run.

Before execute a fling animation of Keyguard, set the animation execution time to 0 determines that it is Screen Off state.
This solution makes Screen On can not affect animation.

Bug: 301196699
Test: run cts KeyguardTests

Change-Id: Ic7be1b5e41814adb44ce79857b79283040b4e3a4
Merged-In: I4743c0ad53f89ee2fdc2f8e9eed864fe79f3bfc3