Merge "Fixing nullPointer exception when wallpaper colors is null" into sc-dev am: ada0acd75c am: f8b98482d4

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14391145

Change-Id: I7cd369d3948a3130529fde6b4a686203d90c7576