在Flutter的Stepper中，如何将步骤的标题放在计数器下面？

Stepper(
  steps: [
    Step(
      title: Text('Step 1'),
      content: Container(
        // 步骤内容
      ),
    ),
    Step(
      title: Text('Step 2'),
      content: Container(
        // 步骤内容
      ),
    ),
    Step(
      title: Text('Step 3'),
      content: Container(
        // 步骤内容
      ),
    ),
  ],
  controlsBuilder: (BuildContext context,
      {VoidCallback? onStepContinue, VoidCallback? onStepCancel}) {
    return Row(
      children: [
        ElevatedButton(
          onPressed: onStepContinue,
          child: const Text('下一步'),
        ),
        SizedBox(width: 16),
        ElevatedButton(
          onPressed: onStepCancel,
          child: const Text('上一步'),
        ),
      ],
    );
  },
);