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: 8577b212

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

Change-Id: Ieec01fe9682e1e23b44905c6ca06403556540000