fix(repository): PullReqeust, Issue 매핑 오류 수정

Author: Hyeseung-OH

backend/src/main/java/com/backend/domain/repository/service/mapper/IssueInfoMapper.java

@@ -37,9 +37,9 @@ public void mapIssueInfo(RepositoryData data, List<IssueResponse> response) {
     }
 
     private void setEmptyIssue(RepositoryData data) {
-        data.setPullRequestCountLast6Months(0);
-        data.setMergedPullRequestCountLast6Months(0);
-        data.setRecentPullRequests(Collections.emptyList());
+        data.setIssueCountLast6Months(0);
+        data.setClosedIssueCountLast6Months(0);
+        data.setRecentIssues(Collections.emptyList());
     }
 
     private RepositoryData.IssueInfo convertToIssueInfo(IssueResponse issue) {

backend/src/main/java/com/backend/domain/repository/service/mapper/PullRequestInfoMapper.java

@@ -37,9 +37,9 @@ public void mapPullRequestInfo(RepositoryData data, List<PullRequestResponse> re
     }
 
     private void setEmptyPullRequest(RepositoryData data) {
-        data.setIssueCountLast6Months(0);
-        data.setClosedIssueCountLast6Months(0);
-        data.setRecentIssues(Collections.emptyList());
+        data.setPullRequestCountLast6Months(0);
+        data.setMergedPullRequestCountLast6Months(0);
+        data.setRecentPullRequests(Collections.emptyList());
     }
 
     private RepositoryData.PullRequestInfo convertToPullRequestInfo(PullRequestResponse pr) {

backend/src/main/java/com/backend/domain/user/service/EmailService.java

@@ -1,6 +1,9 @@
 package com.backend.domain.user.service;
 
+import com.backend.domain.user.repository.UserRepository;
 import com.backend.domain.user.util.RedisUtil;
+import com.backend.global.exception.BusinessException;
+import com.backend.global.exception.ErrorCode;
 import jakarta.mail.MessagingException;
 import jakarta.mail.internet.MimeMessage;
 import lombok.RequiredArgsConstructor;