REPORT-101119 fix:新引擎-下拉复选框选中后查看已选选项，一直在加载中出不来

packages/fineui/src/base/combination/loader.js

@@ -181,7 +181,7 @@ export class Loader extends Widget {
             isEmpty(optionsItems) &&
             nextTick(
                 bind(() => {
-                    isDefaultInit && isEmpty(optionsItems) && this._populate();
+                    isDefaultInit && isEmpty(this.options.items) && this._populate();
                 }, this)
             );
         const items = isFunction(optionsItems)