Keep mui in main vendor bundle

exam/react/vite.config.ts

@@ -13,9 +13,9 @@ export default defineConfig({
       output: {
         manualChunks: (id) => {
           if (id.includes('node_modules')) {
-            if (id.includes('@mui/material')) {
-              return 'vendor_mui';
-            }
+            // if (id.includes('@mui/material')) {
+            //   return 'vendor_mui';
+            // }
             if (id.includes('@tanstack')) {
               return 'vendor_tanstack';
             }