Merge "Replace conversations widget app icon" into sc-dev am: 14e2070709 am: 883cbb303a am: 08710d82e7

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14353226

Change-Id: I824b309ae3c53ab26f0a9c74cf0b2ac573354566