Merge "Use category icon for pending conversation widgets" into sc-dev am: d35dcdec05 am: 96702f890b

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15142493

Change-Id: Ic6ba5276953565c2d68b53188f7d2e74a05172dd