Merge "Update app icon shadows" into tm-dev am: 2b6700a94c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17937870

Change-Id: Ie4eaa9e8cd699849487bfe99bb37eeab10dcce40
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>