fix(测试用例): 修复回复评论并@收不到通知问题

--bug=1042785 --user=王旭 【测试用例】-回复用例评论的同事@被回复人，被回复人收不到评论通知 https://www.tapd.cn/55049933/s/1534096

backend/services/case-management/src/main/java/io/metersphere/functional/service/FunctionalCaseNoticeService.java

@@ -100,6 +100,7 @@ public class FunctionalCaseNoticeService {
                 List<String> notifierList = Arrays.asList(notifier.split(";"));
                 StringBuilder notifierStr = new StringBuilder();
                 if (notifierList.contains(replyUser)) {
+                    notifierStr.append(replyUser).append(";");
                     for (String notifierId : notifierList) {
                         if (!StringUtils.equals(notifierId, replyUser)) {
                             notifierStr.append(notifierId).append(";");