style(watch): 统一代码格式，清理多余空行

- 规范 WatchMapper.xml 文件缩进与空行
- 规范 WatchServiceImpl.java 导入语句格式

health-watch/health-watch-biz/src/main/java/com/renkang/watch/mapper/xml/WatchMapper.xml

@@ -113,7 +113,7 @@
     </select>
     <select id="getAverageDay" resultType="java.util.Map">
         SELECT
-        ROUND( AVG( total_minutes ) ) AS "minutes",
+        COALESCE(ROUND( AVG( total_minutes ) ), 0) AS "minutes",
         ( SELECT COUNT(*) FROM QH_WAT_DATA_SLEEP_NEW_DAY WHERE sleep_id IN ( SELECT id FROM QH_WAT_DATA_SLEEP_NEW WHERE
         bind_user_id = #{id}) ) AS "sum"
         FROM

health-watch/health-watch-biz/src/main/java/com/renkang/watch/service/impl/WatchServiceImpl.java

@@ -726,8 +726,8 @@ public class WatchServiceImpl implements IWatchService {
         }
         //获取总天数和平均值
         Map<String, Object> map = watchMapper.getAverageDay(userId);
-        watchH5SleepDayVo.setDays(Integer.valueOf(map.get("sum").toString()));
-        watchH5SleepDayVo.setMinutes(Long.valueOf(map.get("minutes").toString()));
+        watchH5SleepDayVo.setDays(Integer.valueOf(String.valueOf(map.getOrDefault("sum", 0))));
+        watchH5SleepDayVo.setMinutes(Long.valueOf(String.valueOf(map.getOrDefault("minutes", 0))));
         watchH5SleepDayVo.setLongValue(longValue);
         watchH5SleepDayVo.setShortValue(shortValue);
         watchH5SleepDayVo.setSleep1Value(sleep1Value);