🐛 fix(loading.py): add missing return statement to instantiate_llm function

The missing return statement caused the function to not return any value when the node_type is not "VertexAI". Adding the return statement ensures that the function returns the instantiated class object with the provided parameters in all cases.

src/backend/langflow/interface/initialize/loading.py

@@ -95,6 +95,7 @@ def instantiate_llm(node_type, class_object, params: Dict):
     # False if condition is True
     if node_type == "VertexAI":
         return initialize_vertexai(class_object=class_object, params=params)
+    return class_object(**params)
 
 
 def instantiate_memory(node_type, class_object, params):