fix: 点播视频返回按钮位置偏低，已上调

@@ -65,6 +65,8 @@ export struct EmptyComponent {
   @State timeNum: number = 10
   ///占位图上是否显示返回按钮
   @State showBackButton: boolean = true
+
+  @State bottomSafeHeight: number = AppStorage.get<number>('bottomSafeHeight') || 0
   /**
    * The empty image width percentage setting.
    */
@@ -114,6 +116,7 @@ export struct EmptyComponent {
     Stack({alignContent:Alignment.Bottom}) {
       this.noProgrammeData();
       if (this.showBackButton) {
+        Column(){
           Image($r("app.media.icon_arrow_left_white"))
             .width(24)
             .height(24)
@@ -121,10 +124,18 @@ export struct EmptyComponent {
               router.back();
             })
             .position({
-            bottom: 15,
+              bottom: 16,
               left: 16
             })
         }
+        .height(56)
+        .width('100%')
+        .justifyContent(FlexAlign.Center)
+        .alignItems(HorizontalAlign.Start)
+        .margin({
+          bottom: px2vp(this.bottomSafeHeight)
+        })
+      }
     }
   }