fix(mall): 修改获取字典数据的类型和代码

KKSU

2025-02-12 70b65a25b5792b6277fa6ce61df61a7399c2dcfc

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

@@ -55,4 +55,7 @@

    @TableField(exist = false)
    private String unit;

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