fix(theming): Fix ag-grid theming regression in SQL Lab (#34675)

Co-authored-by: Claude <noreply@anthropic.com>

superset-frontend/plugins/plugin-chart-ag-grid-table/src/utils/getInitialSortState.ts

@@ -17,7 +17,10 @@
  * under the License.
  */
 // All ag grid sort related stuff
-import { GridState, SortModelItem } from 'ag-grid-community';
+import {
+  GridState,
+  SortModelItem,
+} from '@superset-ui/core/components/ThemedAgGridReact';
 import { SortByItem } from '../types';
 
 const getInitialSortState = (sortBy?: SortByItem[]): SortModelItem[] => {