Can Relation() inject custom conditions into LEFT JOIN ON clause?

I'm using Bun ORM and I have a model with a relation, e.g., `Article` has one `Ad`. Bun generates a LEFT JOIN for the relation with soft delete:

LEFT JOIN `ads` AS `ad` ON (`ad`.`id` = `a`.`ad_id`) AND `ad`.`deleted_at` IS NULL

I want to add an extra condition (e.g., `ad.status = 'active'`) **directly into the JOIN ON clause**, not in the WHERE clause.
