Merge "Center drop target button alignment across devices" into tm-dev am:...

Merge "Center drop target button alignment across devices" into tm-dev am: 179c289a am: d740490f am: 5fd6737f am: cec920d2

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/18580267



Change-Id: Iae233672dc084311be6fe5d638589e11a0684a7c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>