默认展示发货明细，封面加载失败改为暂无封面

packageA/shipment/detail.js

@@ -4,7 +4,7 @@ Page({
     data: {
         loading: true,
         sa_logisticsid: null,
-        tabsActive: 0,
+        tabsActive: 2,
         tabsList: [{
             label: "详细信息",
             icon: "icon-tabchanpin"

packageA/shipment/modules/delivery/index.wxml

@@ -9,7 +9,7 @@
 		<view class="image">
 			<van-image width="100%" height="100%" fit="cover" src="{{item.cover||12321}}" use-loading-slot use-error-slot lazy-load>
 				<van-loading slot="loading" type="spinner" size="20" vertical />
-				<text slot="error">加载失败</text>
+				<text slot="error">暂无封面</text>
 			</van-image>
 		</view>
 		<view class="content">