Move is_pipeline_test_to_skip to specific model test classes (#21999)

* Move `is_pipeline_test_to_skip` to specific model test classes

---------

Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>

tests/models/prophetnet/test_modeling_prophetnet.py

@@ -904,6 +904,18 @@ class ProphetNetModelTest(ModelTesterMixin, GenerationTesterMixin, PipelineTeste
     test_resize_embeddings = False
     is_encoder_decoder = True
 
+    # TODO: Fix the failed tests
+    def is_pipeline_test_to_skip(
+        self, pipeline_test_casse_name, config_class, model_architecture, tokenizer_name, processor_name
+    ):
+        if pipeline_test_casse_name == "TextGenerationPipelineTests":
+            # Get `ValueError: AttributeError: 'NoneType' object has no attribute 'new_ones'` or `AssertionError`.
+            # `ProphetNetConfig` was never used in pipeline tests: cannot create a simple
+            # tokenizer.
+            return True
+
+        return False
+
     def setUp(self):
         self.model_tester = ProphetNetModelTester(self)
         self.config_tester = ConfigTester(self, config_class=ProphetNetConfig)