HarmonyOS TextInput在页面返回之后会自动获取焦点

@Entry  
@Component  
struct TextAreaFocusPage {  
  build() {  
    Column() {  
      Button("").width(0).height(0).id("AAAAAA")  
      TextInput()  
        .id('HelloWorld')  
        .fontSize(50)  
        .fontWeight(FontWeight.Bold)  
        .width("100%")  
        .height(200)  
        .defaultFocus(true)  
        .onSubmit(() => {  
          focusControl.requestFocus("AAAAAA")  
          router.pushUrl({  
            url: "pages/Index"  
          })  
        })  
        .fontSize(50)  
        .fontWeight(FontWeight.Bold)  
        .width("100%")  
        .height(100)  
        .id("AAAAAAAA")  
    }  
    .height('100%')  
    .width('100%')  
  }  
}