Merge "Use category icon for pending conversation widgets" into sc-dev am: d35dcdec05 am: 47c3cb02d5

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

Change-Id: Ieb095911790c0810848b42d12357d69d26a0a438