get_machines is too slow and does not use the book keeping data

[peregrineshahin]

https://tests.stockfishchess.org/tests/machines This route should use the latest optimizations of workers book-keeping if exists It's also too slow under fleet load, ignoring the 10s cached http resposne

    def get_machines(self):
        active_runs = self.runs.find({"finished": False}, {"tasks": 1, "args": 1})
        machines = (
            task["worker_info"]
            | {
                "last_updated": (
                    task["last_updated"] if task.get("last_updated") else None
                ),
                "run": run,
                "task_id": task_id,
            }
            for run in active_runs
            if any(task["active"] for task in reversed(run["tasks"]))
            for task_id, task in enumerate(run["tasks"])
            if task["active"]
        )
        return machines