fix: correct workshop ID reference in employee count calculation

CompanyManagment.EFCore/Repository/InstitutionContractRepository.cs

@@ -1309,7 +1309,7 @@ public class InstitutionContractRepository : RepositoryBase<long, InstitutionCon
                     ContractNo = x.contract.ContractNo,
                     ArchiveNo = archiveCode.ToString(),
                     EmployeesCount = _context.LeftWorkList
-                        .Where(l => workshops.Select(w => w.id).Contains(l.id))
+                        .Where(l => workshops.Select(w => w.id).Contains(l.WorkshopId))
                         .Count(l => l.StartWorkDate <= DateTime.Now && l.LeftWorkDate >= DateTime.Now),
                     EmployerNames = employers.Select(e => e.FullName).ToList(),
                     ListStatus = status,