Merge "Show multiple icons for GroupedTaskView" into sc-v2-dev am: 03c13ad130 am: f94d7ca492

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15847979

Change-Id: Ib2b29b92516c6922a8cfa6f260ca280ac0f2941e