Merge "Polish hotseat and taskbar with 3 buttons" into tm-qpr-dev am: 4537638d am: 0d5ca5fe

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20533919



Change-Id: I37921b47514fc4823b2c6ee7d61fbf1ff6ca7c67
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>