v6优化程序 OA绑定AICC 绑定企业微信优化

@@ -60,7 +60,7 @@ class ProjectAssociation extends Model
         return [
                    1 => env('AICC_ENTERPRISE_WECHAT_FRIEND_API_URL'),
                    2 => env('AICC_WECHAT_FRIEND_API_URL'),
-               ][$app];
+               ][$app] ?? env('AICC_ENTERPRISE_WECHAT_FRIEND_API_URL');
     }
 
     /**