Hi, I have an issue with local callback handlers. When I set a global callback handler (a customised version of the langfuse handler) I get a full trace. When I pass the handler (or rather a manager containing the handler) to individual query engines, vector stores etc as an argument it does not get used.
Is passing local callback handlers still supported? I don't want to use global or Settings because I need to adjust the callback handlers parameters based on the current user in an async multitenant enviroment.
