Merge "Support split from fullscreen with shortcuts" into tm-qpr-dev am: 64e965a8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20205314



Change-Id: I2a0199954f8ba1286972f5c20341073791384cf3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>