Merge "Post rendering low res image when using SurfaceView for wallpaper preview" into ub-launcher3-master am: 6fe7a9d28e am: 9658922d1c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/WallpaperPicker2/+/11567297

Change-Id: I672cff2c228eb35de9b052f91d26dad71fa11065