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.
    */
@@ -114,16 +116,25 @@ export struct EmptyComponent {
     Stack({alignContent:Alignment.Bottom}) {
       this.noProgrammeData();
       if (this.showBackButton) {
-        Image($r("app.media.icon_arrow_left_white"))
-          .width(24)
-          .height(24)
-          .onClick(() => {
-            router.back();
-          })
-          .position({
-            bottom: 15,
-            left: 16
-          })
+        Column(){
+          Image($r("app.media.icon_arrow_left_white"))
+            .width(24)
+            .height(24)
+            .onClick(() => {
+              router.back();
+            })
+            .position({
+              bottom: 16,
+              left: 16
+            })
+        }
+        .height(56)
+        .width('100%')
+        .justifyContent(FlexAlign.Center)
+        .alignItems(HorizontalAlign.Start)
+        .margin({
+          bottom: px2vp(this.bottomSafeHeight)
+        })
       }
     }
   }