Merge "Support fade-in divider bar with quick switch gesture" into tm-dev am: 384b521dd5

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/18160666

Change-Id: I0d0f7947fb77a542628dd60a242775cb2f9673dd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>