Merge "Update drop target button alignment across devices" into tm-dev am: 618047355d

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/18557384

Change-Id: I55c0d50a9930643ed84faaf60b382ebe37a2b437
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>