Merge "Fix black flash when launching dual split activity" into udc-dev am: 50875ae2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22785676



Change-Id: Id9f5fd7a7050354a9ceb61d8c55539579acae069
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>