perf: only process images when building for production

vue.config.js

@@ -51,6 +51,7 @@ module.exports = {
       return args;
     });
 
+    if (process.env.NODE_ENV === "production") {
       config.module
         .rule("images")
         .test(/\.(png|jpe?g|gif|webp|svg)(\?.*)?$/i)
@@ -72,5 +73,6 @@ module.exports = {
           };
           return { ...options, ...newOpts };
         });
+    }
   },
 };