chore: fix Table storybook export

packages/semi-ui/table/_story/table.stories.jsx

@@ -97,7 +97,8 @@ export {
     WordBreakNormalTable, WordBreakFixedTable,
     EllipsisNormalTable, EllipsisFixedTable, ShowTitleTable,
     Fixed1556,
-    FixedColumnAlign
+    FixedColumnAlign,
+    FixOnChange
 } from './v2';
 export { default as FixSelectAll325 } from './Demos/rowSelection';