修复<批量更新维保负责人，项目中没有新增这个新的维保工>问题

lift-business-service/src/main/java/cn/com/ty/lift/business/project/service/ProjectLiftRelevanceService.java

@@ -317,7 +317,7 @@ public class ProjectLiftRelevanceService extends ServiceImpl<ProjectLiftRelevanc
                 eq("mt_company_id", request.getMtCompanyId()).
                 in("project_id", projectIds));
         //创建待插入的项目成员列表
-        ArrayList<ProjectUser> insertProjectUsers = new ArrayList<>();
+        Set<ProjectUser> insertProjectUsers = new HashSet<>();
         //循环前端传过来的项目电梯信息
         request.getList().forEach(projectLiftRelevance -> {
             //查询项目用户关联表中是否有这个关联