Merge "Don't show immersive mode dialog over dream window" into rvc-dev am: 3a21399c am: c3e1f71c am: de6835dc am: 37f90f5c

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

Change-Id: I830121b85628a047a5beb93275ed080b3cf728a2