Merge "Ignoring WidgetsListHeader" into udc-qpr-dev am: 72a101c1cc am: d1d99ade2f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/24528764

Change-Id: I74a629e9554abfa72be58f60644d8f2d45a6f381
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>