Fix: 키워드 검색 시 n+1 문제 제거

Author: sso0om

back/src/main/java/com/back/domain/mentoring/mentoring/repository/MentoringRepositoryImpl.java

@@ -57,6 +57,8 @@ public Page<Mentoring> searchMentorings(String keyword, Pageable pageable) {
             .selectFrom(mentoring)
             .leftJoin(mentoring.mentor, mentor).fetchJoin()
             .leftJoin(mentor.member, member).fetchJoin()
+            .leftJoin(mentoring.mentoringTags, mentoringTag).fetchJoin()
+            .leftJoin(mentoringTag.tag, tag).fetchJoin()
             .where(builder)
             .orderBy(mentoring.id.desc())
             .offset(pageable.getOffset())