feat(matrixify): implement matrix of any charts as core Superset feature (#34526)

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

superset-frontend/src/explore/components/ExploreViewContainer/ExploreViewContainer.test.tsx

@@ -16,6 +16,8 @@
  * specific language governing permissions and limitations
  * under the License.
  */
+
+// Mock isMatrixifyEnabled before loading any modules
 import fetchMock from 'fetch-mock';
 import {
   getChartControlPanelRegistry,
@@ -33,6 +35,12 @@ import {
 } from 'spec/helpers/testing-library';
 import ExploreViewContainer from '.';
 
+jest.doMock('@superset-ui/core', () => ({
+  __esModule: true,
+  ...jest.requireActual('@superset-ui/core'),
+  isMatrixifyEnabled: jest.fn(() => false),
+}));
+
 const reduxState = {
   explore: {
     controls: {