Fix image order when 10+ images on dropdown configurable products

Author: lumnn

app/code/Magento/ConfigurableProduct/view/frontend/web/js/configurable.js

@@ -372,7 +372,7 @@ define([
          */
         _sortImages: function (images) {
             return _.sortBy(images, function (image) {
-                return image.position;
+                return parseInt(image.position, 10);
             });
         },