Merge "Account for last animated-to-sleep state when calculating nav visibility" into sc-qpr1-dev am: ac32f8b813 am: 813f93e4d8 am: 228df4eeb6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15838491

Change-Id: I6c6095ee219d39955ebb4d9875ec42f920addfae