Merge "Fix divider bar won't fade-in as the other splitting tasks" into tm-dev am: 59939e9e94 am: 448ae578f9

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17935107

Change-Id: Ia8b5e52d278d8ac280d5827dba3c64dcdbe93220
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>