feat: update query to retrieve paid application count by school using profile information

Author: polyglot-k

src/main/java/life/mosu/mosuserver/domain/application/repository/ApplicationJpaRepository.java

@@ -32,16 +32,17 @@ AND a.status IN ('PENDING', 'ABORT')
 
     @Query("""
             SELECT new life.mosu.mosuserver.presentation.application.dto.SchoolApplicationCountResponse(
-                e.schoolName,
+                p.schoolInfo.schoolName,
                 COUNT(a.id)
             )
             FROM ApplicationJpaEntity a
             JOIN ExamApplicationJpaEntity ea ON ea.applicationId = a.id
             JOIN ExamJpaEntity e ON e.id = ea.examId
+            JOIN ProfileJpaEntity p ON p.userId = a.userId
             WHERE a.deleted = false
             AND a.status = 'APPROVED'
-            GROUP BY e.schoolName
-            ORDER BY e.schoolName
+            GROUP BY p.schoolInfo.schoolName
+            ORDER BY p.schoolInfo.schoolName
             """)
     List<SchoolApplicationCountResponse> findPaidApplicationCountBySchool();