Merge "Moving widget background to xml, so that the same constantstate is used...

Merge "Moving widget background to xml, so that the same constantstate is used for all entries" into tm-qpr-dev am: a75105ef

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



Change-Id: Icb8819fae2b4fd21f76faea78e3e341a32a9508f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>