Add default relation to standard object on custom object in manifest (#18033)

add default relation fields when creating an object from an application

---------

Co-authored-by: prastoin <paul@twenty.com>

packages/twenty-server/src/engine/metadata-modules/object-metadata/utils/build-default-relation-flat-field-metadatas-for-custom-object.util.ts

@@ -1,4 +1,7 @@
-import { STANDARD_OBJECTS } from 'twenty-shared/metadata';
+import {
+  STANDARD_OBJECTS,
+  DEFAULT_RELATIONS_OBJECTS_STANDARD_IDS,
+} from 'twenty-shared/metadata';
 import { FieldMetadataType } from 'twenty-shared/types';
 import { capitalize, isDefined } from 'twenty-shared/utils';
 
@@ -20,14 +23,6 @@ import { STANDARD_OBJECT_ICONS } from 'src/engine/workspace-manager/workspace-mi
 import { type UniversalFlatFieldMetadata } from 'src/engine/workspace-manager/workspace-migration/universal-flat-entity/types/universal-flat-field-metadata.type';
 import { type UniversalFlatObjectMetadata } from 'src/engine/workspace-manager/workspace-migration/universal-flat-entity/types/universal-flat-object-metadata.type';
 
-const DEFAULT_RELATIONS_OBJECTS_STANDARD_IDS = [
-  'timelineActivity',
-  'favorite',
-  'attachment',
-  'noteTarget',
-  'taskTarget',
-] as const satisfies (keyof typeof STANDARD_OBJECTS)[];
-
 const morphIdByRelationObjectNameSingular = {
   timelineActivity:
     STANDARD_OBJECTS.timelineActivity.morphIds.targetMorphId.morphId,