如何在UITextField中使光标的高度与文本的高度一致？

import UIKit

class ViewController: UIViewController, UITextFieldDelegate {
    @IBOutlet weak var textField: UITextField!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        textField.delegate = self
        textField.keyboardAppearance = .default
        textField.keyboardType = .default
        textField.font = UIFont.systemFont(ofSize: 14)
        textField.textAlignment = .left
    }
    
    // 监听文本变化
    func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
        // 计算文本的高度
        let text = NSString(string: textField.text ?? "").replacingCharacters(in: range, with: string)
        let textWidth = textField.frame.width - textField.textRect(forBounds: textField.bounds).origin.x
        let textSize = CGSize(width: textWidth, height: CGFloat.greatestFiniteMagnitude)
        let textHeight = text.boundingRect(with: textSize, options: .usesLineFragmentOrigin, attributes: [NSAttributedString.Key.font: textField.font ?? UIFont.systemFont(ofSize: 14)], context: nil).height
        
        // 调整UITextField的高度
        textField.frame.size.height = textHeight
        
        return true
    }
    
    // 文本开始编辑时设置光标的高度与文本高度一致
    func textFieldDidBeginEditing(_ textField: UITextField) {
        let caretRect = CGRect(x: textField.frame.origin.x, y: textField.frame.origin.y, width: 1, height: textField.frame.size.height)
        textField.caretRect(for: textField.position(from: textField.beginningOfDocument, offset: textField.text?.count ?? 0) ?? textField.beginningOfDocument)
    }
}