fix(openai): handle parsed_n non integer (#1470)

Author: hassiebp

langfuse/openai.py

@@ -492,7 +492,7 @@ def _get_langfuse_data_from_kwargs(resource: OpenAiDefinition, kwargs: Any) -> A
             modelParameters.pop("max_tokens", None)
             modelParameters["max_completion_tokens"] = parsed_max_completion_tokens
 
-        if parsed_n is not None and parsed_n > 1:
+        if parsed_n is not None and isinstance(parsed_n, int) and parsed_n > 1:
             modelParameters["n"] = parsed_n
 
         if parsed_seed is not None: