Ozg 7573 forwarding interface

vorgang-manager-server/src/test/java/de/ozgcloud/vorgang/vorgang/VorgangGrpcServiceITCase.java

@@ -223,7 +223,7 @@ class VorgangGrpcServiceITCase {
 		}
 
 		private static GrpcFormData expectedFormData() {
-			var grpcFormData = GrpcFormDataTestFactory.createBuilder().clearField().addAllField(formFields);
+			var grpcFormData = GrpcFormDataTestFactory.createBuilder().clearField().addAllField(formFields).clearForm();
 			for (String subFormName : List.of(TITLE_SUBFORM_1, TITLE_SUBFORM_2, TITLE_SUBFORM_3)) {
 				grpcFormData.addForm(GrpcSubForm.newBuilder()
 						.setTitle(subFormName)