fix linting

Author: ajac-zero

pydantic_ai_slim/pydantic_ai/models/openai.py

@@ -715,6 +715,7 @@ class _MapModelResposeContext:
         collecting various parts of the model response (like text and tool calls)
         to form a single assistant message.
         """
+
         texts: list[str] = field(default_factory=list)
         tool_calls: list[ChatCompletionMessageFunctionToolCallParam] = field(default_factory=list)