### Steps to reproduce

Manually run the following command in the ruby console:
`::Migration::MigrationUtils::PermissionAdder.add(:view_work_packages, :view_file_links)`

### What is the buggy behavior?

The Begin of the insertion`PermissionAdd.add`End of the insertion Begin of the deletion PermissionAdd.add()End of the deletion will create a new set Begin of the insertion`view_file_links`End of the insertion Begin of the deletion 'view\_file\_links'End of the deletion permission for all roles that have the Begin of the insertion`view_work_packages`End of the insertion Begin of the deletion view\_work\_packagesEnd of the deletion permission. Running Begin of the insertion`PermissionAdd.add`End of the insertion Begin of the deletion PermissionAdd.add()End of the deletion multiple times will result in multiple copies of the same record in the Begin of the insertion`role_permissions`End of the insertion Begin of the deletion role\_permissionsEnd of the deletion table.

### What is the expected behavior?

Begin of the insertion`PermissionAdd.add`End of the insertion Begin of the deletion PermissionAdd.add()End of the deletion should add a new permission when run for the first time. Running it again should not add additional rows in table Begin of the insertion`role_permissions`.End of the insertion Begin of the deletion role\_permissions.End of the deletion

### OpenProject Version

Running with 12.1 DEV (2022-07-15)