Merge "Fixing nullPointer exception when wallpaper colors is null" into sc-dev am: ada0acd75c am: 05d63cef48 am: 3c26845077

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

Change-Id: Ic6e6540625c960e0f54c9b246d9de7040c3ec127