fix(TQDMProgressBar): Ensure TQDMProgressBar is used in DDP test

The test_progress_bar_max_val_check_interval_ddp test was failing in CI due to an AttributeError. This occurred because _RICH_AVAILABLE was not mocked, leading to RichProgressBar being used incorrectly. This commit adds the necessary @patch decorator to ensure TQDMProgressBar is instantiated as expected.

Author: littlebullGit

tests/tests_pytorch/callbacks/progress/test_tqdm_progress_bar.py

@@ -626,6 +626,7 @@ def test_progress_bar_max_val_check_interval(
     assert pbar_callback.is_enabled
 
 
+@patch("lightning.pytorch.trainer.connectors.callback_connector._RICH_AVAILABLE", False)
 @RunIf(min_cuda_gpus=2, standalone=True)
 @pytest.mark.parametrize("val_check_interval", [0.2, 0.5])
 def test_progress_bar_max_val_check_interval_ddp(tmp_path, val_check_interval):