Merge "Allow starting split from home, selecting second app from overview"...

Merge "Allow starting split from home, selecting second app from overview" into udc-qpr-dev am: aa17ce62 am: 44a52351

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23679274



Change-Id: I13fed9f0918e18f0643279d23d3d31337e862e14
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>