Merge pull request #243863 in DEC/fineui from release/11.0 to feature/x

* commit '23c324bd4dbaec852d938f014dcb4402f1ceac0c':
  REPORT-101788 && REPORT-101859 fix:【11.0.19冒烟】新前端-控件-下拉树 下拉树搜索失效，输入值没反应 && FR11样式-下拉树控件模糊搜索无反应，控制台报错
  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)

packages/fineui/src/widget/multitree/trigger/multi.tree.search.insert.pane.js

@@ -11,7 +11,7 @@ export class MultiTreeSearchInsertPane extends Widget {
         el: { type: PartTree.xtype },
     };
 
-    static constants = {
+    static CONSTANTS = {
         height: 24,
     };
 
@@ -36,7 +36,7 @@ export class MultiTreeSearchInsertPane extends Widget {
                             self.addTip = _ref;
                         },
                         text: i18nText("BI-Basic_Click_To_Add_Text", ""),
-                        height: this.constants.height,
+                        height: MultiTreeSearchInsertPane.CONSTANTS.height,
                         cls: "bi-high-light",
                         handler() {
                             self.fireEvent(MultiTreeSearchInsertPane.EVENT_ADD_ITEM, opts.keywordGetter());