[bark] fix loading of generation config (#36587)

src/transformers/models/bark/modeling_bark.py

@@ -1573,6 +1573,14 @@ class BarkModel(BarkPreTrainedModel):
 
         self.config = config
 
+    @classmethod
+    def can_generate(cls) -> bool:
+        # Bark has a unique model structure, where the external class (`BarkModel`) doesn't need to inherit from
+        # `GenerationMixin` (it has a non-standard generation method), but one of the internal models do
+        # (`BarkSemanticModel`). This means that the base `can_generate()` will return `False`, but we need to
+        # override it so as to do `GenerationConfig` handling in multiple parts of the codebase.
+        return True
+
     @property
     def device(self) -> torch.device:
         """