Merge pull request lightspeed-core#1669 from tisnik/lcore-2104

LCORE-2104: Added missing type argument

Author: tisnik

src/app/endpoints/a2a.py

@@ -862,7 +862,7 @@ async def receive() -> MutableMapping[str, Any]:
         logger.info("Handling A2A streaming request")
 
         # Create queue for passing chunks from ASGI app to response generator
-        chunk_queue: asyncio.Queue = asyncio.Queue()
+        chunk_queue: asyncio.Queue[Optional[bytes]] = asyncio.Queue()
 
         async def streaming_send(message: dict[str, Any]) -> None:
             """Send callback that queues chunks for streaming."""