Merge "Don't show immersive mode dialog over dream window" into rvc-dev am:...

Merge "Don't show immersive mode dialog over dream window" into rvc-dev am: 3a21399c am: 226cb31b am: a9626a8a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11953484

Change-Id: Ifebb9498762a06888ebca2b181dafa6c2833cf25