Merge "Handle split to pip if open another fullscreen app case" into udc-dev am: dbc02d3f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23467957



Change-Id: Idac290fc5c70052ec7f7e13ae2913f5c4da0cf36
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>