fix(client): fix a bug which causes client's running status not to be…

… updated

src/gemini_webapi/client.py

@@ -212,15 +212,15 @@ async def close(self, delay: float = 0) -> None:
         if delay:
             await asyncio.sleep(delay)
 
+        self.running = False
+
         if self.close_task:
             self.close_task.cancel()
             self.close_task = None
 
         if self.client:
             await self.client.aclose()
 
-        self.running = False
-
     async def reset_close_task(self) -> None:
         """
         Reset the timer for closing the client when a new request is made.
@@ -486,7 +486,9 @@ def __setattr__(self, name: str, value: Any) -> None:
             self.rcid = value.rcid
 
     async def send_message(
-        self, prompt: str, images: list[bytes | str | Path] | None = None,
+        self,
+        prompt: str,
+        images: list[bytes | str | Path] | None = None,
     ) -> ModelOutput:
         """
         Generates contents with prompt.