feat:调整启动广告

@@ -89,7 +89,7 @@ struct LaunchAdvertisingPage {
             }else {
             }else {
               //显示图片
               //显示图片
               Image(this.defaultModel.bootScreenUrl)
               Image(this.defaultModel.bootScreenUrl)
-                .objectFit(this.isPad?ImageFit.Cover:ImageFit.Fill)
+                .objectFit(this.isPad?ImageFit.Contain:ImageFit.Contain)
                   // .expandSafeArea([SafeAreaType.SYSTEM], [SafeAreaEdge.TOP, SafeAreaEdge.BOTTOM])
                   // .expandSafeArea([SafeAreaType.SYSTEM], [SafeAreaEdge.TOP, SafeAreaEdge.BOTTOM])
                 .width('100%')
                 .width('100%')
                 .height('100%')
                 .height('100%')