Function run_mcp_with_context 

async fn run_mcp_with_context<T, F, Fut>(
    request_context: Option<RequestContext>,
    span: Span,
    operation: &'static str,
    f: F,
) -> Result<T, ErrorData>
where
    F: FnOnce(Instant) -> Fut,
    Fut: Future<Output = Result<T, ErrorData>>,