refactor(接口测试): 修复修改表头设置调整字段顺序没立即生效的缺陷 (#12276)

--bug=1011885 --user=王孝刚 【接口测试】接口定义 - CASE 列表，表头设置调整字段顺序没生效
https://www.tapd.cn/55049933/s/1129312

Co-authored-by: wxg0103 <727495428@qq.com>

frontend/src/business/components/common/components/table/MsTable.vue

@@ -19,6 +19,7 @@
         @header-dragend="headerDragend"
         @cell-mouse-enter="showPopover"
         @row-click="handleRowClick"
+        :key="tableActive"
         ref="table">
 
       <el-table-column
@@ -165,7 +166,8 @@ export default {
       selectRows: new Set(),
       selectIds: [],
       // hasBatchTipShow: false,
-      defaultSort: {}
+      defaultSort: {},
+      tableActive: true
     };
   },
   props: {
@@ -479,8 +481,10 @@ export default {
       this.$refs.table.toggleRowSelection();
     },
     reloadTable() {
+      this.tableActive = false;
       this.$nextTick(() => {
         this.doLayout();
+        this.tableActive = true;
       });
     },
     addPaddingColClass({column}) {