chore(perf): perf the format

Author: electroluxcode

components/table/demo/colspan-rowspan.vue

@@ -29,6 +29,7 @@ Table cell supports `colSpan` and `rowSpan` that set in render return object. Wh
 </template>
 <script lang="ts" setup>
 import type { TableColumnType } from 'ant-design-vue';
+import { h } from 'vue';
 // In the fifth row, other columns are merged into first column
 // by setting it's colSpan to be 0
 const sharedOnCell = (_, index) => {
@@ -109,6 +110,10 @@ const columns: TableColumnType[] = [
         return { colSpan: 0 };
       }
     },
+    customRender: ({text}) => {
+              console.log("--customRender render--");
+              return h("h1", {}, text);
+    }
   },
   {
     title: 'Phone',