HarmonyOS 鸿蒙Next uiContext.getPromptAction().openCustomDialog 能实现打开一个页面级的弹窗吗

可以模拟弹窗效果来实现：

import router from '[@ohos](/user/ohos).router';

[@Entry](/user/Entry)
[@Component](/user/Component)
struct Index {
 [@State](/user/State) textValue: string = 'Hello World'
 [@State](/user/State) visible: Visibility = Visibility.None

 build() {
   Stack() {
     Row() {
       Column() {
         Text('Hello World')
           .fontSize(50)
           .fontWeight(FontWeight.Bold)
         Button('click')
           .onClick(() => {
             console.log("hit me!")
             if (this.visible == Visibility.Visible) {
               this.visible = Visibility.None
             } else {
               this.visible = Visibility.Visible
             }
           })
           .backgroundColor(0x777474)
           .fontColor(0x000000)
       }
       .width('100%')
     }
     .height('100%')
     .backgroundColor("#36D")
     Column() {
       GridRow({
         columns:{xs:1 ,sm: 4, md: 8, lg: 12},
         breakpoints: { value: ["400vp", "600vp", "800vp"],
           reference: BreakpointsReference.WindowSize },
       })
       {
         GridCol({
           span:{xs:1 ,sm: 2, md: 4, lg: 8},
           offset:{xs:0 ,sm: 1, md: 2, lg: 2}
         }){
           Column() {
             Text('Change text').fontSize(20).margin({ top: 10, bottom: 10 })
             TextInput({ placeholder: '', text: this.textValue }).height(60).width('90%')
               .onChange((value: string) => {
                 this.textValue = value
               })
             Text('Whether to change a text?').fontSize(16).margin({ bottom: 10 })
             Flex({ justifyContent: FlexAlign.SpaceAround }) {
               Button('cancel')
                 .onClick(() => {
                   if (this.visible == Visibility.Visible) {
                     this.visible = Visibility.None
                   } else {
                     this.visible = Visibility.Visible
                   }

                 }).backgroundColor(0xffffff).fontColor(Color.Black)
               Button('jump')
                 .onClick(() => {
                   router.pushUrl({
                     url: 'pages/main'
                   })
                 }).backgroundColor(0xffffff).fontColor(Color.Red)
             }.margin({ bottom: 10 })
           }
           .backgroundColor(0xffffff)
           .visibility(this.visible)
           .clip(true)
           .borderRadius(20)
         }
       }
     }.width('95%')
   }
 }
}