Merge "Merge "Fix divider bar not shown when entering split with rotation transition" into tm-dev am: 01eda663 am: ba4d1336 am: b9feb0a6" into tm-qpr-dev-plus-aosp am: 318cbba1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18247768



Change-Id: I53081daf67c61c19573843284b65328ca6724bda
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>