End chat lifecycle is called twice

[kevinwmerritt]

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Describe the bug The on_chat_end hook is called twice.

To Reproduce Steps to reproduce the behavior:

@cl.on_chat_start
async def on_chat_start():
    print("on_chat_start")

@cl.on_chat_end
async def end_chat():
    print("on_chat_end")

1. Navigate to /
2. Click on New Chat
3. Submit at least one message.
4. Observe in logs that on_chat_end is called twice.

Expected behavior The on_chat_end hook is called once.

Screenshots

https://github.com/Chainlit/chainlit/assets/590874/91bf99af-96f8-457e-9893-7d71ec6f62d8

Additional context Chainlit 1.0.506