Merge "Ensure notif panel behavior in immersive mode" into rvc-qpr-dev am:...

Merge "Ensure notif panel behavior in immersive mode" into rvc-qpr-dev am: 7c6a4eee am: bda41b51

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12642386

Change-Id: I35d582afd9c69445d9c6f620f8a75b6cddb0b8d6