add missing import to UserManagementDetailComponent

so that back link works

Fix jhipster#24641

generators/angular/templates/src/main/webapp/app/admin/user-management/detail/user-management-detail.component.ts.ejs

@@ -26,7 +26,7 @@ import { User } from '../user-management.model';
   standalone: true,
   selector: '<%= jhiPrefixDashed %>-user-mgmt-detail',
   templateUrl: './user-management-detail.component.html',
-  imports: [SharedModule],
+  imports: [RouterModule, SharedModule],
 })
 export default class UserManagementDetailComponent implements OnInit {
   user: User | null = null;