fix(mall): 修复退款金额计算逻辑

KKSU

2024-12-05 bfdf5fb50141c41246d26523d6e335223962fa94

 src/main/java/cc/mrbird/febs/mall/service/IAgentService.java

@@ -5,4 +5,6 @@
    void autoUpAgentLevel(Long memberId);

    void returnMoneyToAgent(Long orderId);

    void rankReturnMoney(Long orderId);
}