refactor : 기본 언어가 저장되지 않은 유저에 대해 조회시 1번 언어로 자동 설정 및 조회되도록 설정

src/main/java/org/ezcode/codetest/application/usermanagement/user/service/UserService.java

@@ -56,14 +56,18 @@ public class UserService {
 	private final RedisTemplate<String, String> redisTemplate;
 	private final S3Uploader s3Uploader;
 
-	@Transactional(readOnly = true)
+	@Transactional
 	public UserInfoResponse getUserInfo(AuthUser authUser) {
 		log.info("authUserEmail: {}, authUserID : {}", authUser.getEmail(), authUser.getId());
 		User user = userDomainService.getUserById(authUser.getId());
 		int userSubmissionCount = submissionDomainService.findSubmissionCountByUserId(user.getId());
 		List<UserAuthType> userAuthTypes = userDomainService.getUserAuthTypesByUser(user);
 		List<AuthType> authTypes = userAuthTypes.stream()
 			.map(UserAuthType::getAuthType).toList();
+		if (user.getLanguage() == null) {
+			Language userLanguage = languageDomainService.getLanguage(1L);
+			user.setLanguage(userLanguage);
+		}
 
 		return UserInfoResponse.builder()
 			.username(user.getUsername())

src/main/java/org/ezcode/codetest/domain/user/model/entity/User.java

@@ -216,4 +216,8 @@ public void modifyProfileImage(String profileImageUrl) {
 	public void modifyUserRole(UserRole userRole) {
 		this.role = userRole;
 	}
+
+	public void setLanguage(Language userLanguage) {
+		this.language = userLanguage;
+	}
 }