Merge "Polish auto-enter-pip from landscape and split-screen" into sc-dev am: 005e269220 am: 52df9c8580

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15132509

Change-Id: Iac9d33519d0683b2dc6e8ddf2862f1dc06c86757