Merge "Allow grids to specify if we should start align taskbar in 3 button...

Merge "Allow grids to specify if we should start align taskbar in 3 button nav." into tm-qpr-dev am: 65ac592f am: a2b770b4

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/22361600



Change-Id: I41eea8cf3fa15c9c5c3f3184f2ba75318332f623
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>