Merge "Adjust edit state drop targets, workspace scaling, and margins per...

Merge "Adjust edit state drop targets, workspace scaling, and margins per device type and orientation." into tm-dev am: 016dd365

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17002680

Change-Id: I6622f99ba36c3d8e61c3d258a2abd76f8500f88e