fix(backend): userbot follows kurigram 2.2.26, user and chat parsing is awaited, missing chat is handled

backend/src/userbot/handlers/messages.py

@@ -36,4 +36,4 @@ async def on_message(client: PyroClient, message: Message) -> None:
         await safe_transcribe(client, ctx, meta.chat_id, message.id)
 
 
-handlers = on_message.handlers
+handlers = on_message.handlers  # ty: ignore[unresolved-attribute]