refactor(entity): 修正取货ID字段命名规范

- 将 pickupId 字段重命名为 pickUpId 以符合驼峰命名约定
- 保持字段功能和数据类型不变

app/entity/request/api/store/order/StoreOrderCreateRequestEntity.php

@@ -15,7 +15,7 @@ class StoreOrderCreateRequestEntity extends RequestCommonEntity
     public $fzonePayType = [];
     public $shareId = 0;
     public $uid = 0;
-    public $pickupId = 0;
+    public $pickUpId = 0;
 
     public function getCartId(): int
     {