Merge "Fix launch adjacent behavior if split background" into udc-dev am:...

Merge "Fix launch adjacent behavior if split background" into udc-dev am: 741dd914 am: 700e57e0 am: 19c223b7 am: 3e459c64

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23367664



Change-Id: I19cef82d6f042dc0106a6fa808a7221158ccfce8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>