Identification cleanup (#17301)

# Introduction

following https://github.com/twentyhq/twenty/pull/17279
As we've finally identified all the syncable metadata entities, which
means they're expected to have non nullable applicationId and
universalIdentifier at pg_level we can remove previous retro comp
universalIdentifier fallbacking and update the dto too

~~This needs IdentifyRemainingEntitiesMetadataCommand and
MakeRemainingEntitiesUniversalIdentifierAndApplicationIdNotNullableMigrationCommand
to be run~~
```ts
[Nest] 197  - 01/21/2026, 3:08:35 PM     LOG [MakeRemainingEntitiesUniversalIdentifierAndApplicationIdNotNullableMigrationCommand] Successfully run MakeRemainingEntitiesUniversalIdentifierAndApplicationIdNotNullableMigrationCommand
```

packages/twenty-server/src/engine/metadata-modules/flat-role/utils/from-create-role-input-to-flat-role-to-create.util.ts

@@ -48,7 +48,7 @@ export const fromCreateRoleInputToFlatRoleToCreate = ({
     workspaceId,
     createdAt: now,
     updatedAt: now,
-    universalIdentifier: createRoleInput.universalIdentifier ?? id,
+    universalIdentifier: createRoleInput.universalIdentifier ?? v4(),
     applicationId,
     roleTargetIds: [],
     objectPermissionIds: [],

packages/twenty-server/src/engine/metadata-modules/flat-role/utils/from-role-entity-to-flat-role.util.ts

@@ -21,8 +21,8 @@ export const fromRoleEntityToFlatRole = (role: RoleEntity): FlatRole => {
     workspaceId: role.workspaceId,
     createdAt: role.createdAt.toISOString(),
     updatedAt: role.updatedAt.toISOString(),
-    universalIdentifier: role.universalIdentifier ?? role.standardId ?? role.id,
-    applicationId: role.applicationId ?? null,
+    universalIdentifier: role.universalIdentifier,
+    applicationId: role.applicationId,
     roleTargetIds: role.roleTargets.map((rt) => rt.id),
     objectPermissionIds: role.objectPermissions.map((op) => op.id),
     permissionFlagIds: role.permissionFlags.map((pf) => pf.id),