Merge "Force relayout when wallpaper engine become visible." into rvc-dev am:...

Merge "Force relayout when wallpaper engine become visible." into rvc-dev am: ec30716a am: 8b3f702c am: 19f6e5e7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11863063

Change-Id: Ib810eda995c38fc990d117a78b874d52fb174f25