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: 14648b57

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

Change-Id: I0ffdcffff8e7232e0985a6450d508662bfd9bc1c