Merge "Polish home-key from split to pip transition" into udc-dev am: c7a500cc am: aeb6f3b6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23833763



Change-Id: I97859e6fcff024d0c07d8fc2c39ad5a989fdebdd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>