Fix config issue to support Triton

Signed-off-by: Jael Gu <mengjia.gu@zilliz.com>

timm_image.py

@@ -120,7 +120,9 @@ class TimmImage(NNOperator):
 
     @property
     def config(self):
-        return resolve_data_config({}, model=self._model)
+        m = create_model(self.model_name, pretrained=False)
+        config = resolve_data_config({}, model=m)
+        return config
 
     @arg(1, to_image_color('RGB'))
     def convert_img(self, img: towhee._types.Image):