[TECH] Fix user app not loading groups

api/api-iam/iam-external/src/main/java/fr/gouv/vitamui/iam/external/server/service/GroupExternalService.java

@@ -76,6 +76,7 @@ import lombok.Setter;
 public class GroupExternalService extends AbstractResourceClientService<GroupDto, GroupDto> {
 
     private static final String IDENTIFIER_KEY = "identifier";
+    private static final String ID_KEY = "id";
     private static final String NAME_KEY = "name";
     private static final String ENABLED_KEY = "enabled";
     private static final String DESCRIPTION_KEY = "description";
@@ -133,7 +134,7 @@ public class GroupExternalService extends AbstractResourceClientService<GroupDto
 
     @Override
     public Collection<String> getAllowedKeys() {
-        return Arrays.asList(IDENTIFIER_KEY, NAME_KEY, ENABLED_KEY, DESCRIPTION_KEY, LEVEL_KEY, CUSTOMER_ID_KEY);
+        return Arrays.asList(ID_KEY, IDENTIFIER_KEY, NAME_KEY, ENABLED_KEY, DESCRIPTION_KEY, LEVEL_KEY, CUSTOMER_ID_KEY);
     }
 
     @Override