Fix 0.53 upgrade commands (#11987)

In this PR:
- fixes
[0-53-upgrade-search-vector-on-person-entity.command.ts](https://github.com/twentyhq/twenty/pull/11987/files#diff-d97fb2aefe44ac5d849fb7e29b8eaa1ca7c0f109d1b43fbdf87723b05dd22f58)
small mistake
- adding Cascade DELETE on fieldMetadata.relationTargetObjectMetadataId
(like we have on fieldMetadata.objectMetatadaId)
- enabling IsNewRelationEnabled in 0.53 upgrade

packages/twenty-server/src/engine/metadata-modules/field-metadata/field-metadata.entity.ts

@@ -124,6 +124,7 @@ export class FieldMetadataEntity<
     () => ObjectMetadataEntity,
     (objectMetadata: ObjectMetadataEntity) =>
       objectMetadata.targetRelationFields,
+    { onDelete: 'CASCADE' },
   )
   @JoinColumn({ name: 'relationTargetObjectMetadataId' })
   relationTargetObjectMetadata: Relation<ObjectMetadataEntity>;