Merge "Do not show animation background with wallpaper transition" into tm-dev...

Merge "Do not show animation background with wallpaper transition" into tm-dev am: dc19fc3b am: 4ddec89f am: 4736f15a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17665554



Change-Id: Ic1da12a84219641d7ece6f3580ed52221f9ed614
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>