fix: ipd访问时lang错误

app/index/config/lang.php

@@ -19,7 +19,7 @@ return [
     // 扩展语言包
     'extend_list'     => [
         'en-us' => [
-            app()->getAppPath() . '/lang/en-us/' . (request()->isMobile() ? 'mobile' : 'pc') . '.php',
+            app()->getAppPath() . '/lang/en-us/' . get_platform() . '.php',
             app()->getAppPath() . '/lang/en-us/validate.php',
         ],
     ],

app/index/lang/en-us/pc.php

@@ -1,6 +1,7 @@
 <?php
 
 return [
+    '首页' => 'Home',
     '产品列表' => 'Products',
     '店铺' => 'Store',
     '搜索记录' => 'Search History',