v3.1.3: Update helper.php

支持新特征，无需匿名函数

# 旧的用法
 $appInfo = cache_has_set("cache-{$client_id}",function () use ($client_id){
            return App::where('client_id', $client_id)->first();
        }); 
# 新的用法
$appInfo = cache_has_set("cache-{$client_id}",App::where('client_id', $client_id)->first());