skip Fuyu from test_generate (#35246)

* skip Fuyu from test_generate

* make fixup, quality, repo-consistency

tests/generation/test_utils.py

@@ -1202,6 +1202,7 @@ class GenerationTesterMixin:
                     "prophetnet",
                     "seamlessm4t",
                     "clvp",
+                    "fuyu",
                 ]
             ):
                 self.skipTest(reason="May fix in the future: need model-specific fixes")