revert createDropzone

Author: wxiaoguang

web_src/js/features/dropzone.js

@@ -1,6 +1,8 @@
 export default async function createDropzone(el, opts) {
-  import(/* webpackChunkName: "dropzone" */'dropzone/dist/dropzone.css');
-  const {Dropzone} = await import(/* webpackChunkName: "dropzone" */'dropzone');
+  const [{Dropzone}] = await Promise.all([
+    import(/* webpackChunkName: "dropzone" */'dropzone'),
+    import(/* webpackChunkName: "dropzone" */'dropzone/dist/dropzone.css'),
+  ]);
   Dropzone.autoDiscover = false;
   return new Dropzone(el, opts);
 }