fix: 解决导入模型json 数据没有保存问题

Author: zws-code

src/components/SimpleProcessDesignerV2/src/SimpleProcessModel.vue

@@ -190,6 +190,7 @@ const importLocalFile = () => {
   reader.onload = function () {
     if (isString(this.result)) {
       processNodeTree.value = JSON.parse(this.result)
+      emits('save', processNodeTree.value)
     }
   }
 }