refactor: improve clarity of subscriber startup process in message_queue.py

Updated comment to specify that the subscriber starts in the background, enhancing code readability and understanding of the asynchronous behavior.

Signed-off-by: zhenyus <zhenyus@mathmast.com>

apps/devops/app/providers/message_queue.py

@@ -19,9 +19,9 @@ def register(app):
         )
         print("Registered deployment heartbeat processor")
         
-        # Start the subscriber
+        # Start the subscriber in the background
         loop = asyncio.get_running_loop()
-        await loop.create_task(
+        loop.create_task(
             app.deployment_heartbeat_subscriber.subscribe(max_retries=5, event_loop=loop)
         )
         print("Started deployment heartbeat subscriber")