fix(项目管理): 修复消息中心查询数量问题

--bug=1039289 --user=郭雨琦 https://www.tapd.cn/55049933/bugtrace/bugs/view/1155049933001039289

backend/services/system-setting/src/main/java/io/metersphere/system/service/NotificationService.java

@@ -57,6 +57,7 @@ public class NotificationService {
         List<OptionDTO> optionDTOS = new ArrayList<>();
         buildParam(notificationRequest, userId);
         notificationRequest.setResourceType(StringUtils.EMPTY);
+        notificationRequest.setStatus(NotificationConstants.Status.UNREAD.name());
         List<NotificationDTO> notifications = baseNotificationMapper.listNotification(notificationRequest);
         OptionDTO totalOptionDTO = new OptionDTO();
         totalOptionDTO.setId("total");