Merge "Revert "Revert "[Unfold animation] Do not show dark vignette whe...""...

Merge "Revert "Revert "[Unfold animation] Do not show dark vignette whe..."" into tm-qpr-dev am: ee3dc5a8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21024145



Change-Id: Iba45d8b87814c440a4ef204099d3c0ec2e40c109
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>