fix(用例管理): 三方查询问题

--bug=1036153 --user=王旭 【用例查看】需求-关联需求界面，列表不支持特殊符号搜索 https://www.tapd.cn/55049933/s/1492572

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

@@ -334,7 +334,7 @@ public class FunctionalCaseDemandService {
 
     public PluginPager<PlatformDemandDTO> pageDemand(FunctionalThirdDemandPageRequest request) {
         DemandPageRequest demandPageRequest = new DemandPageRequest();
-        demandPageRequest.setQuery(request.getKeyword());
+        demandPageRequest.setQuery(StringUtils.replace(request.getKeyword(),"\\",""));
         demandPageRequest.setFilter(request.getFilter());
         demandPageRequest.setStartPage(request.getCurrent());
         demandPageRequest.setPageSize(request.getPageSize());