Fix config type problem

inference_utils.py

@@ -281,7 +281,7 @@ def load_model_by_config(
     # config = importlib.import_module(config_module).make_config()
     if model_class in (DiffusionT2WModel, DiffusionV2WModel):
         config = make_config()
-    elif model_class in (LatentDiffusionDecoderModel):
+    elif model_class is LatentDiffusionDecoderModel:
         config = ldd_make_config()