[AINode] Distinguish uppder and lower case of model id (apache#15847)

Author: CRZbulabula

iotdb-core/ainode/ainode/core/manager/model_manager.py

@@ -101,7 +101,6 @@ def load_model(self, model_id: str, acceleration: bool = False) -> Callable:
         """
         Load the model with the given model_id.
         """
-        model_id = model_id.lower()
         logger.info(f"Load model {model_id}")
         try:
             model = self.model_storage.load_model(model_id, acceleration)
@@ -115,7 +114,6 @@ def save_model(self, model_id: str, model: nn.Module) -> TSStatus:
         """
         Save the model using save_pretrained
         """
-        model_id = model_id.lower()
         logger.info(f"Saving model {model_id}")
         try:
             self.model_storage.save_model(model_id, model)
@@ -152,4 +150,4 @@ def get_built_in_model_type(self, model_id: str) -> BuiltInModelType:
         """
         Get the type of the model with the given model_id.
         """
-        return self.model_storage.get_built_in_model_type(model_id.lower())
+        return self.model_storage.get_built_in_model_type(model_id)