fix: 断网，频道信息流无网络默认缺省页，换肤模式下展示和安卓不一致

@@ -57,6 +57,12 @@ export struct PageComponent {
             this.getData()
           }
         })
+          .backgroundColor(Color.White)
+          .margin({
+            left: 6,
+            right: 6
+          })
+          .borderRadius(4)
           .grayscale(this.isMourning ? 1 : 0)
       }
     }
@@ -110,7 +116,7 @@ export struct PageComponent {
                   compIndex: compIndex,
                   pageId: this.pageId
                 }
-              );
+              )
             }
           }
           .grayscale(this.isMourning && compIndex < 8 ? 1 : 0)
@@ -147,7 +153,14 @@ export struct PageComponent {
 
   @Builder
   LoadingLayout() {
-    channelSkeleton().grayscale(this.isMourning ? 1 : 0)
+    channelSkeleton()
+      .margin({
+        left: 6,
+        right: 6
+      })
+      .borderRadius(4)
+      .backgroundColor(Color.White)
+      .grayscale(this.isMourning ? 1 : 0)
     // CustomRefreshLoadLayout({
     //   refreshBean: new RefreshLayoutBean(true,
     //     $r('app.media.ic_pull_up_load'), $r('app.string.pull_up_load_text'), this.pageModel.pullDownRefreshHeight)