fix(mall): 修复 V3 数值计算逻辑

KKSU

2025-01-06 cfb92f155cd9a7a69f6d4e58cbd826c36cb613a7

 src/main/java/cc/mrbird/febs/mall/entity/MallOrderItem.java

@@ -52,4 +52,10 @@

    @TableField(exist = false)
    private long[] orderIdsStr;

    @TableField(exist = false)
    private String unit;

    @TableField(exist = false)
    private BigDecimal itemAmount;
}