feat: simplification of default-value specification in FieldMetadata (#4592)

* feat: wip refactor default-value

* feat: health check to migrate default value

* fix: tests

* fix: refactor defaultValue to make it more clean

* fix: unit tests

* fix: front-end default value

packages/twenty-server/src/modules/favorite/standard-objects/favorite.object-metadata.ts

@@ -29,7 +29,7 @@ export class FavoriteObjectMetadata extends BaseObjectMetadata {
     label: 'Position',
     description: 'Favorite position',
     icon: 'IconList',
-    defaultValue: { value: 0 },
+    defaultValue: 0,
   })
   position: number;