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 am: 67e1e039

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>