HarmonyOS Swiper中item由于使用了Navigation，导致在折叠屏大屏上展示宽度异常

参考示例demo如下：

import { CustomDialogA, CustomDialogB,webDialog } from '../cases/dialog/CustomDialog'
import { CaseDialog } from '../cases/dialog/CaseDialog'
@Entry
@Component
struct Index {
  @Provide('pageInfos') pageInfos: NavPathStack = new NavPathStack()
  @State mode:NavigationMode = NavigationMode.Split

  uiContext: UIContext | undefined = undefined;

  aboutToAppear() {
    this.uiContext = this.getUIContext();
  }
  @Builder
  PageMap(name: string) {
    if (name === 'dialog') {
      CaseDialog()
    } else if (name === 'customDialog') {
      CustomDialogA()
    } else if (name === 'fullDialog') {
      CustomDialogB()
    } else if(name === 'webDialog'){
      webDialog()
    }
  }
  build() {
    Navigation(this.pageInfos) {
      Column() {
        Button('Dialog', { stateEffect: true, type: ButtonType.Capsule })
          .onClick(() => {
            this.pageInfos.pushPath({ name: 'dialog' })
          })
        Button('Stack', { stateEffect: true, type: ButtonType.Capsule })
          .onClick(() => {
            if(this.uiContext) {
              this.uiContext.keyframeAnimateTo({}, [
                {
                  // 第一段关键帧动画时长为800ms，scale属性做从1到1.5的动画
                  duration: 800,
                  event: () => {
                    this.mode = NavigationMode.Stack
                  }
                },
              ]);
            }

          })
        Button('Split', { stateEffect: true, type: ButtonType.Capsule })
          .onClick(() => {
            if(this.uiContext) {
              this.uiContext.keyframeAnimateTo({}, [
                {
                  // 第一段关键帧动画时长为800ms，scale属性做从1到1.5的动画
                  duration: 800,
                  event: () => {
                    this.mode = NavigationMode.Split
                  }
                },
              ]);
            }
          })
      }
    }
    .mode(this.mode)
    .hideTitleBar(true)
    .navDestination(this.PageMap)
  }
}

参考关键帧动画：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/ts-keyframeanimateto-V5