Merge "Adding support for keyboard based drag and drop" into sc-dev am: 3186fbaed4

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13460194

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I810773f40be09234c66042f909190531380f0de6