test(apollo): fixed modal test

Author: Abderrahman FAWZY DEV

client/apollo/react/src/Modal/__tests__/Modal.test.tsx

@@ -37,15 +37,15 @@ const expectModalOpened = async () => {
   await waitFor(() => {
     expect(defaultProps.onCancel).not.toHaveBeenCalled();
   });
-  expect(dialog).toHaveAttribute("open", "true");
+  expect(dialog).toHaveAttribute("open", "");
 };
 
 const expectModalClosed = async () => {
   const dialog = getDialog();
   await waitFor(() => {
     expect(defaultProps.onCancel).toHaveBeenCalled();
   });
-  expect(dialog).toHaveAttribute("open", undefined);
+  expect(dialog).toHaveAttribute("open", null);
 };
 
 describe("Modal", () => {