chore: add ast-grep rule to convert Optional[T] to T | None (#25560)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/core/agent/strategy/plugin.py

@@ -1,5 +1,5 @@
 from collections.abc import Generator, Sequence
-from typing import Any, Optional
+from typing import Any
 
 from core.agent.entities import AgentInvokeMessage
 from core.agent.plugin_entities import AgentStrategyEntity, AgentStrategyParameter
@@ -38,10 +38,10 @@ class PluginAgentStrategy(BaseAgentStrategy):
         self,
         params: dict[str, Any],
         user_id: str,
-        conversation_id: Optional[str] = None,
-        app_id: Optional[str] = None,
-        message_id: Optional[str] = None,
-        credentials: Optional[InvokeCredentials] = None,
+        conversation_id: str | None = None,
+        app_id: str | None = None,
+        message_id: str | None = None,
+        credentials: InvokeCredentials | None = None,
     ) -> Generator[AgentInvokeMessage, None, None]:
         """
         Invoke the agent strategy.