Merge branch 'BE/userinfo' into 'backend'

feat: qna 조회 수정

See merge request s11-webmobile1-sub2/S11P12A701!111

backend/src/main/java/com/edufocus/edufocus/qna/repository/QnaRepository.java

@@ -14,5 +14,7 @@ import java.util.List;
 public interface QnaRepository extends JpaRepository<Qna, Long> {
 
     List<Qna> findByLectureId(Long lecturerId);
+    
+    @Query("SELECT q FROM Qna q WHERE q.lecture.id = :lectureId ORDER BY q.createdAt DESC")
     Page<Qna> findByLectureId(Long lectureId, Pageable pageable);
 }