fix(CellGroup): failed to inherit scopeId with title (#12328)

packages/vant/src/cell-group/CellGroup.tsx

@@ -1,5 +1,6 @@
 import { defineComponent, type ExtractPropTypes } from 'vue';
 import { truthProp, createNamespace, BORDER_TOP_BOTTOM } from '../utils';
+import { useScopeId } from '../composables/use-scope-id';
 
 const [name, bem] = createNamespace('cell-group');
 
@@ -26,6 +27,7 @@ export default defineComponent({
           { [BORDER_TOP_BOTTOM]: props.border && !props.inset },
         ]}
         {...attrs}
+        {...useScopeId()}
       >
         {slots.default?.()}
       </div>