fix:17433 无网络时-进入电子报，不该展示分享按钮

@@ -148,7 +148,7 @@ export struct ENewspaperPageComponent {
                 this.calendarDialogController.close()
               }
           })
-
+          if (this.newspaperListBean && this.newspaperListBean.list && this.newspaperListBean.list.length > 0) {
             Image($r('app.media.icon_share'))
               .height($r('app.float.top_arrow_size'))
               .width($r('app.float.top_arrow_size'))
@@ -161,6 +161,7 @@ export struct ENewspaperPageComponent {
                 ToastUtils.showToast('分享为公共方法，待开发', 1000);
               })
           }
+        }
         .margin({ left: $r('app.float.margin_16'), right: $r('app.float.margin_16') })
         .height($r('app.float.top_bar_height'))
         .alignRules({