ui: vditor: respect cdn_prefix setting

packages/ui-default/build/config/webpack.js

@@ -143,6 +143,7 @@ export default function (env = {}) {
         patterns: [
           { from: root('static') },
           { from: root(`${dirname(require.resolve('emojify.js/package.json'))}/dist/images/basic`), to: 'img/emoji/' },
+          { from: root(`${dirname(require.resolve('vditor/package.json'))}`), to: 'vditor' },
         ],
       }),
       new webpack.DefinePlugin({