Merge "Start unfold Shell transition from WM side only when unfolding" into udc-dev am: 25812122

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22970018



Change-Id: I74bca3f19c6e2f4b517a8ee47289e8d57f9f474c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>