Merge "[Unfold animation] Do not show dark vignette when folding" into tm-qpr-dev am: a2d811ed

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21009614



Change-Id: I5913bfee02cd5f179f357ba9e5642e86d7a741e3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>