Merge "Fix crash from previewing launcher with unknown wallpaper colors." into...

Merge "Fix crash from previewing launcher with unknown wallpaper colors." into sc-dev am: 200d7634 am: c2a6378f am: e6f74c68

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15462873

Change-Id: I454098a793350165d8a083d410f60a0cea28e75f