Merge "Set split button drawable to start instead of left" into tm-qpr-dev am: 346b970942 am: d56e6a6306 am: 2997c1f84f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21566803

Change-Id: I7c1a4594baf35d794ed333b55eea4fa932bef3a4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>