chore: import upstream snapshot with attribution

backend/chainlit/data/utils.py

@@ -0,0 +1,29 @@
+import functools
+from collections import deque
+
+from chainlit.context import context
+from chainlit.session import WebsocketSession
+
+
+def queue_until_user_message():
+    def decorator(method):
+        @functools.wraps(method)
+        async def wrapper(self, *args, **kwargs):
+            if (
+                isinstance(context.session, WebsocketSession)
+                and not context.session.has_first_interaction
+            ):
+                # Queue the method invocation waiting for the first user message
+                queues = context.session.thread_queues
+                method_name = method.__name__
+                if method_name not in queues:
+                    queues[method_name] = deque()
+                queues[method_name].append((method, self, args, kwargs))
+
+            else:
+                # Otherwise, Execute the method immediately
+                return await method(self, *args, **kwargs)
+
+        return wrapper
+
+    return decorator