Merge "Allow non-resizable apps in split-screen (6/n)" into sc-dev am: 0838b40e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13438138

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I84230eeb2e6952081de0f74e7efba70305818e12