Merge "Respect the orientation of a home activity in the process of launching...

Merge "Respect the orientation of a home activity in the process of launching when split-screen enabled." into rvc-dev am: 1f7c4db5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11959749

Change-Id: I69d8c4c9fe67eb4ceff9301c7ce338a6bb2dcbc5