fix mapping of areaID

Author: Marcel Jacek

stackit/internal/services/iaas/project/datasource.go

@@ -175,8 +175,12 @@ func mapDataSourceFields(projectResp *iaas.Project, model *DatasourceModel) erro
 	model.ProjectId = types.StringValue(projectId)
 
 	var areaId basetypes.StringValue
-	if projectResp.AreaId != nil && projectResp.AreaId.String != nil {
-		areaId = types.StringPointerValue(projectResp.AreaId.String)
+	if projectResp.AreaId != nil {
+		if projectResp.AreaId.String != nil {
+			areaId = types.StringPointerValue(projectResp.AreaId.String)
+		} else if projectResp.AreaId.StaticAreaID != nil {
+			areaId = types.StringValue(string(*projectResp.AreaId.StaticAreaID))
+		}
 	}
 
 	var createdAt basetypes.StringValue