Merge "Show a snackbar on predicted icon longpress" into ub-launcher3-rvc-dev am: c471a9a6

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/11916646

Change-Id: I202db77991f7c3dd58f5c832325e477f07d19b3b