Evaluate the most recently trained model against the current best model.

  Args:
    state: the RL loop State instance.

async def evaluate_trained_model(state):
  """Evaluate the most recently trained model against the current best model.

  Args:
    state: the RL loop State instance.
  """

  return await evaluate_model(
      state.train_model_path, state.best_model_path,
      os.path.join(fsdb.eval_dir(), state.train_model_name), state.seed)