Merge "Taskbar All Apps button visual updates" into tm-qpr-dev am: a0743cf62c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20724415

Change-Id: Ib3ff9ebcfd645a6f929e17e17aec4f14b070b7ec
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>