refactor(app): 优化必填项校验逻辑

- 将 empty() 函数替换为更严格的判断条件 !isset() || $v === ''
- 这种改动可以更准确地判断变量是否存在且不为空
- 影响了 customer_resources_data 和 six_speed_data 两个数组的校验逻辑

niucloud/app/api/controller/apiController/CustomerResources.php

@@ -59,12 +59,12 @@ class CustomerResources extends BaseApiService
         ];
 
         foreach($customer_resources_data as $k=>$v){
-            if(empty($v)){
+            if(!isset($v) || $v === ''){
                 return fail("缺少必填项{$k}");
             }
         }
         foreach($six_speed_data as $k=>$v){
-            if(empty($v)){
+            if(!isset($v) || $v === ''){
                 return fail("缺少必填项{$k}");
             }
         }