Merge "Add support for taskbar phone 3 button seascape" into udc-qpr-dev am: ea12af617e am: fc85ff02fb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23623277

Change-Id: If5dc5bc609448ce0282947887bb992cc0994bb3c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>