注意：庫存回滾

New system logic for Shipped by Seller (SBS) orders, the system will now rollback the inventory if the SBS order gets voided.

Example:

• SKU 123 庫存 = 10
• 客戶下單購買 2 件 SKU 123。
• SKU 123 庫存 = 8
• 訂單被取消
• 系統將回滾庫存 8 + 2 = 10
• SKU 123 庫存 = 10