Merge "Add utility for isWallpaperSupported." into tm-dev am: 9417012064

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17303344

Change-Id: I5702f08dba200d3aefa45c510a67e389c18054ae
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>