HarmonyOS CustomDialogController 弹出多次如何修改每次的offset

目前自定义弹窗的所有参数，暂不支持动态刷新。具体可参考链接如下： https://gitee.com/openharmony/docs/blob/master/zh-cn/application-dev/reference/apis-arkui/js-apis-arkui-UIContext.md#updatecustomdialog12

参考以下demo:

import { BusinessError } from '@ohos.base';
import { ComponentContent } from "@ohos.ArkUI.node";

class Params {
  text: string = ""
  constructor(text: string) {
    this.text = text;
  }
}
@Builder
function buildText(params: Params) {
  Column() {
    Text(params.text)
      .fontSize(50)
      .fontWeight(FontWeight.Bold)
      .margin({bottom: 36})
  }.backgroundColor('#FFF0F0F0')
}
@Entry
@Component
struct Index {
  @State message: string = "hello"
  build() {
    Row() {
      Column() {
        Button("click me")
          .onClick(() => {
            let uiContext = this.getUIContext();
            let promptAction = uiContext.getPromptAction();
            let contentNode = new ComponentContent(uiContext, wrapBuilder(buildText), new Params(this.message));
            try {
              promptAction.openCustomDialog(contentNode);
            } catch (error) {
              let message = (error as BusinessError).message;
              let code = (error as BusinessError).code;
              console.error(OpenCustomDialog args error code is ${code}, message is ${message});
            };
            setTimeout(() => {
              try {
                promptAction.updateCustomDialog(contentNode, { alignment: DialogAlignment.CenterEnd });
              } catch (error) {
                let message = (error as BusinessError).message;
                let code = (error as BusinessError).code;
                console.error(updateCustomDialog args error code is ${code}, message is ${message});
              };
            }, 2000);   //2秒后自动更新弹窗位置
          })
      }
      .width('100%')
      .height('100%')
    }
    .height('100%')
  }
}