[fix/#91] 문항 조회 필드 수정

Author: seokbeom00

src/main/java/com/moplus/moplus_server/domain/problemset/repository/ProblemSetGetRepositoryCustom.java

@@ -31,8 +31,8 @@ public ProblemSetGetResponse getProblemSet(ProblemSet problemSet) {
         List<Tuple> problemData = queryFactory
                 .select(
                         QProblem.problem.id,
-                        QProblem.problem.problemCustomId,
-                        QProblem.problem.title,
+                        QProblem.problem.problemCustomId.id,
+                        QProblem.problem.title.title,
                         QProblem.problem.memo,
                         QProblem.problem.mainProblemImageUrl
                 )
@@ -62,8 +62,8 @@ public ProblemSetGetResponse getProblemSet(ProblemSet problemSet) {
         List<ProblemSummaryResponse> problemSummaries = problemData.stream()
                 .map(tuple -> ProblemSummaryResponse.builder()
                         .problemId(tuple.get(QProblem.problem.id))
-                        .problemCustomId(tuple.get(QProblem.problem.problemCustomId).toString())
-                        .problemTitle(tuple.get(QProblem.problem.title).toString())
+                        .problemCustomId(tuple.get(QProblem.problem.problemCustomId.id))
+                        .problemTitle(tuple.get(QProblem.problem.title.title))
                         .memo(tuple.get(QProblem.problem.memo))
                         .mainProblemImageUrl(tuple.get(QProblem.problem.mainProblemImageUrl))
                         .tagNames(conceptTagMap.getOrDefault(tuple.get(QProblem.problem.id), new HashSet<>()))