HarmonyOS 获取焦点弹出键盘后，点击空白区域不能自动取消焦点

可以通过空白部分的点击事件，动态的修改TextInput的属性不可获焦，然后通过TextInput的点击事件设置可获焦。或者通过转移焦点到其他非关键组件上使当前TextInput失焦

@Entry
@Component
struct FocusableExample {
  @State inputValue: string = ''
  @State textInputFocusAble: boolean = true;
  controller: TextInputController = new TextInputController()

  build() {
    Column() {
      TextInput({ placeholder: 'wait input...', text: '', controller: this.controller })
        .id("textInput")
        .focusable(this.textInputFocusAble)
        .margin({ top: 150 })
    }
    .onClick(() => {
      this.textInputFocusAble = false;
      let setFocusAble = setInterval(() => {
        this.textInputFocusAble = true;
        clearInterval(setFocusAble)
      }, 100)
    })
    .backgroundColor(Color.Grey)
    .height("100%")
  }
}
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