如何在tvOS上禁用AVPlayerViewController中的播放暂停按钮？

import AVKit

class CustomPlayerViewController: AVPlayerViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 遍历子视图，找到播放暂停按钮
        for subview in self.view.subviews {
            if let button = subview as? UIButton {
                // 禁用按钮的用户交互
                button.isUserInteractionEnabled = false
            }
        }
    }
}

let playerViewController = CustomPlayerViewController()
playerViewController.player = AVPlayer(url: videoURL)
present(playerViewController, animated: true) {
    playerViewController.player?.play()
}