Fix issue with directly instantiating subclass of DJLLargeModel

Author: siddvenk

src/sagemaker/djl_inference/model.py

@@ -85,7 +85,7 @@ def __new__(
             config_file = uncompressed_model_data + "/config.json"
 
         model_type = json.loads(s3.S3Downloader.read_file(config_file)).get("model_type")
-        cls_to_create = _determine_engine_for_model_type(model_type)
+        cls_to_create = cls if cls is not DJLLargeModel else _determine_engine_for_model_type(model_type)
         return super(DJLLargeModel, cls).__new__(cls_to_create)
 
     def __init__(