Merge "Attempt to fix concurrent modification issue in QuickstepWidgetHolder" into udc-dev am: 4c233bd645

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/22391715

Change-Id: I40664aee1c8d4f90b82d0f0041b31e2c932705d8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>