BI-148470 refactor: 增加popup

packages/fineui/src/widget/multilayerdownlist/combo.downlist.js

@@ -23,6 +23,7 @@ export class MultiLayerDownListCombo extends Widget {
             container: null,
             stopPropagation: false,
             el: {},
+            popup: {},
         });
     }
 
@@ -65,6 +66,7 @@ export class MultiLayerDownListCombo extends Widget {
                 el: this.popupview,
                 stopPropagation: o.stopPropagation,
                 maxHeight: 1000,
+                ...o.popup,
             },
         });