Merge "Merge "Take screen-off animation into account when determining hiding...

Merge "Merge "Take screen-off animation into account when determining hiding nav bar" into sc-dev am: 6574585d am: cd14d4c3" into sc-v2-dev-plus-aosp am: bb5cc61d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15192680

Change-Id: I36f7fccdce6ad5160c80c79ff963cc6532a847c1