HarmonyOS 视频组件无法扩展其安全区域

onWindowStageCreate(windowStage: window.WindowStage): void {  
   windowStage.loadContent('pages/Index', (err, data) => {  
     if (err.code) {  
       return;  
     }  
     let windowClass: window.Window = windowStage.getMainWindowSync(); // 获取应用主窗口  
     // 1. 设置窗口全屏  
     let isLayoutFullScreen = true;  
     windowClass.setWindowLayoutFullScreen(isLayoutFullScreen)  
       .then(() => {  
         console.info('Succeeded in setting the window layout to full-screen mode.');  
       })  
       .catch((err: BusinessError) => {  
         console.error(`Failed to set the window layout to full-screen mode. Code is ${err.code}, message is ${err.message}`);  
       });  
   });  
 }