fix(session): prevent task cancellation race condition in stop method

The fix properly cancels the recv_task and suppresses CancelledError when awaiting
it during session shutdown. This resolves the "read() called while another
coroutine is already waiting for incoming data" RuntimeError that occurred when
stopping sessions during reconnection attempts.

Signed-off-by: wulan17 <wulan17@komodos.id>

pyrogram/session/session.py

@@ -19,6 +19,7 @@
 
 import asyncio
 import bisect
+import contextlib
 import logging
 import os
 from datetime import datetime, timedelta
@@ -179,7 +180,9 @@ class Session:
         await self.connection.close()
 
         if self.recv_task:
-            await self.recv_task
+            self.recv_task.cancel()
+            with contextlib.suppress(asyncio.CancelledError):
+                await self.recv_task
 
         if not self.is_media and callable(self.client.disconnect_handler):
             try: