[CI] Fix tensorizer test assertion (#24545)

Signed-off-by: Peter Schuurman <psch@google.com>

tests/tensorizer_loader/test_tensorizer.py

@@ -161,11 +161,11 @@ def test_load_without_tensorizer_load_format(vllm_runner, capfd, model_ref):
         model = vllm_runner(
             model_ref,
             model_loader_extra_config=TensorizerConfig(tensorizer_uri="test"))
+        pytest.fail("Expected RuntimeError for extra config keys")
     except RuntimeError:
         out, err = capfd.readouterr()
         combined_output = out + err
-        assert ("ValueError: Model loader extra config "
-                "is not supported for load "
+        assert ("ValueError: Unexpected extra config keys for load "
                 "format auto") in combined_output
     finally:
         del model
@@ -181,11 +181,12 @@ def test_raise_value_error_on_invalid_load_format(vllm_runner, capfd,
             model_ref,
             load_format="safetensors",
             model_loader_extra_config=TensorizerConfig(tensorizer_uri="test"))
+        pytest.fail("Expected RuntimeError for extra config keys")
     except RuntimeError:
         out, err = capfd.readouterr()
 
         combined_output = out + err
-        assert ("ValueError: Model loader extra config is not supported "
+        assert ("ValueError: Unexpected extra config keys "
                 "for load format safetensors") in combined_output
     finally:
         del model