Websocket messages containing just a number are not shown in the chat

[pieroit]

Note I was sure this was a backend issue about tools, but I just verified that the websocket message in fact arrives to the admin. Maybe there is some check about content being a string

To Reproduce

1. create a tool with @tool(return_direct=True)
2. tool returns a number return 2
3. message does not end up in the chat

If you return "2", the message is correctly picked

[pieroit]

I can fix core side by forcing content to string before sending out the ws message

[pieroit]

Fixed