Guard new occlude/unocclude logic behind aconfig flag.

Bug: 364930619
Test: atest android.server.wm.keyguard.KeyguardTests
Flag: com.android.window.flags.ensure_keyguard_does_transition_starting
Change-Id: I2122f8f2f6626e65e3060a9ac92ba0f75145e1e1
1 file changed