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: 7ca1b38d am: b21fcdd4 am: 10acf9c6

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



Change-Id: Ib34976e387341710d6d74a2a0e0e30cc4d83ccb7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>