Revert "[chore] 리크루팅 정보에서 openChatUrl 삭제"

This reverts commit fb1dbee.

src/main/java/ceos/backend/domain/recruitment/dto/response/GetRecruitmentResponse.java

@@ -19,6 +19,7 @@ public class GetRecruitmentResponse {
     private LocalDate startDateInterview;
     private LocalDate endDateInterview;
     private LocalDate resultDateFinal;
+    private String openChatUrl;
     private LocalDate otDate;
     private LocalDate demodayDate;
 
@@ -34,6 +35,7 @@ public static GetRecruitmentResponse from(Recruitment recruitment) {
                 .startDateInterview(recruitment.getStartDateInterview())
                 .endDateInterview(recruitment.getEndDateInterview())
                 .resultDateFinal(recruitment.getResultDateFinal())
+                .openChatUrl(recruitment.getOpenChatUrl())
                 .otDate(recruitment.getOtDate())
                 .demodayDate(recruitment.getDemodayDate())
                 .build();