Merge "Moving widget background to xml, so that the same constantstate is used for all entries" into tm-qpr-dev am: a75105ef03 am: 67e1e03913

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21381944

Change-Id: Icde51114b8f5655ea516b0ea8233c5f6734d2997
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>