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: 5980f2b7 am: 855629a8 am: 80025c08

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



Change-Id: I5fe2e20849586546c8e69c3602c0e5b219c69721
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>