feat: enhance employer gender handling in registration workflow

CompanyManagment.EFCore/Repository/EmployerRepository.cs

@@ -592,7 +592,7 @@ public class EmployerRepository : RepositoryBase<long, Employer>, IEmployerRepos
             var legalTypeValue = legalType == LegalType.Real ? "حقیقی" : "حقوقی";
             query = query.Where(x => x.IsLegal == legalTypeValue);
         }
-        
+
         var viewModelQuery = query.Select(x => new EmployerSelectListViewModel()
         {
             Id = x.id,
@@ -1078,7 +1078,12 @@ public class EmployerRepository : RepositoryBase<long, Employer>, IEmployerRepos
                 PlaceOfIssue = employer.PlaceOfIssue,
                 DateOfIssue = employer.DateOfIssue.ToFarsi(),
                 FatherName = employer.FatherName,
-                Gender = employer.Gender == "مرد" ? Gender.Male : Gender.Female,
+                Gender = employer.Gender switch
+                {
+                    null => Gender.None,
+                    "مرد" => Gender.Male,
+                    _ => Gender.Female
+                },
                 GovernmentSystemInfo = governmentSystemInfo,
                 IsAuth = employer.IsAuth,
                 PhoneNumber = employer.Phone,
@@ -1110,7 +1115,6 @@ public class EmployerRepository : RepositoryBase<long, Employer>, IEmployerRepos
                 CeoIdNumber = employer.IdNumber,
                 IdNumberSeri = employer.IdNumberSeri,
                 TelephoneNumber = employer.IdNumber
-
             };
         }
 
@@ -1123,7 +1127,6 @@ public class EmployerRepository : RepositoryBase<long, Employer>, IEmployerRepos
             InstitutionWorkshopInitialId = contractWorkshopInitial.id,
             RealEmployer = realEmployer,
             LegalEmployer = legalEmployer,
-
         };
         return res;
     }