Merge "Fix translucent activities when unfolding" into tm-qpr-dev am: b3ec2ce0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21150127



Change-Id: I6a363828d5acb805b15b27b6f7e05c46aea01950
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>