Merge "Implement two pane widget picker" into tm-qpr-dev am: 740541e0 am: d36fa5e6

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20508230



Change-Id: I65049b8bb98e845c705e92e33e56a7b8955e3f79
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>