SwiftUIでUITextFieldを使用した際に､文字入力後TextFieldを空にする方法がわかりません｡

Question

SwiftuiにUIKitのTextFieldを入れて使用しています｡
SwiftUI独自のTextFieldでは文字入力に不具合があるためです｡

クリアボタン並びに登録ボタンを押したあとにテキストフィールド内を空にしたいのですが､表示上空にすることができません｡

登録ボタンを押した直後に､登録ボタンのdisabledは認識されますが､画面表示は残ってしまいます｡

よろしくお願いいたします｡

import SwiftUI
import CoreData

struct InputMenuView: View {
    
     @Environment(.managedObjectContext) var context
    
    func addMessage(){
        let newMessage = BtList(context: context)
        newMessage.id = UUID()
        newMessage.isComplete = false
        newMessage.message = registerMessage
        newMessage.saveDate = Date()
        do{
            try context.save()
        }catch{
            print(error)
        }
    }
    
    @State var registerMessage = ""
    
    
    var textFieldWidth = UIScreen.main.bounds.width*9/10
    var body: some View {
        VStack{
            HStack{
                //キャンセルボタン
                Button(action:{
                     self.registerMessage = ""
                   
                    UIApplication.shared.endEditing()
                }){
                    Image(systemName: "xmark.circle").font(.title)
                }
                Spacer()
                
                //登録ボタン
                Button(action:{
                    self.addMessage()
                    print(self.registerMessage)
                    self.registerMessage = ""
                    print("(self.registerMessage)です｡")
                }){
                    Image(systemName: "plus.circle").font(.title)
                }.disabled(self.registerMessage.isEmpty)
                
                 }//HStack
                MakeTextField(title: "#今日の体調",text:self.$registerMessage )
                    .fixedSize()
                    
        }//VStack
}//body
}//View

import SwiftUI

var textFieldWidth = UIScreen.main.bounds.width
var textFieldHeight = 5

final class _TextFieldCoordinator: NSObject {
    var control: MakeTextField

    init(_ control: MakeTextField) {
        self.control = control
        super.init()
        control.textField.addTarget(self, action: #selector(textFieldEditingDidBegin(_:)), for: .editingDidBegin)
        control.textField.addTarget(self, action: #selector(textFieldEditingDidEnd(_:)), for: .editingDidEnd)
        control.textField.addTarget(self, action: #selector(textFieldEditingChanged(_:)), for: .editingChanged)
        control.textField.addTarget(self, action: #selector(textFieldEditingDidEndOnExit(_:)), for: .editingDidEndOnExit)
    }

    @objc private func textFieldEditingDidBegin(_ textField: UITextField) {
        control.onEditingChanged(true)
    }

    @objc private func textFieldEditingDidEnd(_ textField: UITextField) {
        control.onEditingChanged(false)
    }

    @objc private func textFieldEditingChanged(_ textField: UITextField) {
        control.text = textField.text ?? ""
    }

    @objc private func textFieldEditingDidEndOnExit(_ textField: UITextField) {
        control.onCommit()
    }
}

struct MakeTextField: UIViewRepresentable {

    private let title: String?
    @Binding var text: String
    let onEditingChanged: (Bool) -> Void
    let onCommit: () -> Void

    let textField = UITextField()

    init(title: String?, text: Binding<String>, onEditingChanged: @escaping (Bool) -> Void = { _ in }, onCommit: @escaping () -> Void = {}) {
        self.title = title
        self._text = text
        self.onEditingChanged = onEditingChanged
        self.onCommit = onCommit
    }

    func makeCoordinator() -> _TextFieldCoordinator {
        _TextFieldCoordinator(self)
    }

    func makeUIView(context: Context) -> UITextField {
        textField.placeholder = title
        textField.delegate = context.coordinator as? UITextFieldDelegate
//        textField.backgroundColor = UIColor.gYellow
        
        textField.borderStyle = UITextField.BorderStyle.roundedRect
        textField.frame = CGRect(x: 0, y: 0, width: Int(textFieldWidth), height: Int(textFieldWidth)/8)
        return textField
    }

    func updateUIView(_ uiView: UITextField, context: Context) {
    }
}