Add applicationId to syncableEntity and fix syncApp deletion (#15170)

## Context
- All flatEntity should extend SyncableEntity
- SyncableEntity should now have applicationId and application relation
- Fix syncApp deletion, should now properly use migration v2 to delete
syncable entities

packages/twenty-server/src/engine/metadata-modules/flat-role/types/flat-role.type.ts

@@ -1,3 +1,4 @@
+import { type FlatEntityFrom } from 'src/engine/metadata-modules/flat-entity/types/flat-entity.type';
 import { type RoleEntity } from 'src/engine/metadata-modules/role/role.entity';
 
 export const roleEntityRelationProperties = [
@@ -10,9 +11,7 @@ export const roleEntityRelationProperties = [
 export type RoleEntityRelationProperties =
   (typeof roleEntityRelationProperties)[number];
 
-export type FlatRole = Omit<
+export type FlatRole = FlatEntityFrom<
   RoleEntity,
   RoleEntityRelationProperties | 'createdAt' | 'updatedAt'
-> & {
-  universalIdentifier: string;
-};
+>;

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

@@ -20,5 +20,6 @@ export const fromRoleEntityToFlatRole = (role: RoleEntity): FlatRole => {
     canBeAssignedToApiKeys: role.canBeAssignedToApiKeys,
     workspaceId: role.workspaceId,
     universalIdentifier: role.standardId || role.id,
+    applicationId: role.applicationId ?? null,
   };
 };