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

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



Change-Id: Ia7d8641fed42d07eecaf90e99814792a2048bc23
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>