Merge "Adding support for overriding long-press menu in Launcher" into sc-v2-dev am: bb6bb5bbbd am: e1ef8e8dc8

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15433782

Change-Id: If4af848156e9f830cc225381cb7de62623069c05