Merge "Allow users to dismiss notifications in popup view." into sc-qpr1-dev am: 2f9f6378be am: 8bcbb662bb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15690344

Change-Id: I867a334b953f45d4d5600ce9652c243d3d1f7e4b