Fix widget jump at the end of the new home animation.

The window animation wasn't being updated correctly, which resulted in a
jump at the end.

Bug: 298089923
Fix: 347880952
Flag: com.android.launcher3.enable_scaling_reveal_home_animation
Test: manual
Change-Id: Idbbd2e8485ae6f2bcbc1b42aa3744c2c659d1cfc