fix(taglist-order): improve error handler when the order does not exists

src/scripts/error.js

@@ -1,5 +1,6 @@
 export class DockerRegistryUIError extends Error {
   constructor(msg) {
     super(msg);
+    this.isError = true;
   }
 }

src/scripts/taglist-order.js

@@ -20,7 +20,7 @@ export const taglistOrderVariants = (taglistOrder) => {
       } else if (TAGLIST_ORDER_REGEX.test(taglistOrder)) {
         return taglistOrder;
       }
-      throw new DockerRegistryUIError(`The order \`${taglistOrder}\` is not recognized.`);
+      throw new DockerRegistryUIError(`The taglist order \`${taglistOrder}\` is not recognized.`);
   }
 };