VLMs: enable generation tests (#33533)

* add tests

* fix whisper

* update

* nit

* add qwen2-vl

* more updates!

* better this way

* fix this one

* fix more tests

* fix final tests, hope so

* fix led

* Update tests/generation/test_utils.py

Co-authored-by: Joao Gante <joaofranciscocardosogante@gmail.com>

* pr comments

* not pass pixels and extra for low-mem tests, very flaky because of visio tower

---------

Co-authored-by: Joao Gante <joaofranciscocardosogante@gmail.com>

tests/test_modeling_common.py

@@ -4744,7 +4744,7 @@ class ModelTesterMixin:
                 output_logits=True,
                 return_dict_in_generate=True,
             )
-            self.assertTrue(torch.allclose(dynamic_out.logits[0], static_out.logits[0], rtol=1e-3, atol=1e-4))
+            self.assertTrue(torch.allclose(dynamic_out.logits[0], static_out.logits[0], rtol=1e-3, atol=1e-3))
 
     # For now, Let's focus only on GPU for `torch.compile`
     @slow