Merge "Gets the wallpaper color to update the preview text/icon" into ub-launcher3-master am: b809892936 am: e3c64223a9

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/WallpaperPicker2/+/11554043

Change-Id: Ibed915566b318f89a9080eac87430cb93a35126e