style(mes/roll/grind): 调整磨削记录查询排序为降序

将磨削记录的默认排序从按磨削时间升序改为降序，确保最新的磨削记录显示在列表前面，便于用户优先查看最近的操作记录。

klp-mes/src/main/resources/mapper/roll/MesRollGrindMapper.xml

@@ -25,7 +25,7 @@
           <if test="lineId != null">AND line_id = #{lineId}</if>
           <if test="beginTime != null and beginTime != ''">AND grind_time &gt;= #{beginTime}</if>
           <if test="endTime != null and endTime != ''">AND grind_time &lt;= #{endTime}</if>
-        ORDER BY grind_time ASC, grind_id ASC
+        ORDER BY grind_time DESC, grind_id ASC
     </select>
 
     <select id="selectMonthlyStats" resultType="map">