Post deletion hooks are not fully consistent.

[Cawa-93]

We have hooks with a dynamic part like and deleted_post_{$post->post_type}, but there is no similar version for before_delete_post.

I suggest adding an equivalent hook before_delete_post_{$post->post_type}

The hook fire before the general before_delete_post hook and have the same parameters.

It complement the delete_post_{$post->post_type} and deleted_post_{$post->post_type} hooks.

Trac ticket: https://core.trac.wordpress.org/ticket/62302

Technically I think this is fine. But knowing previous tickets, where I suggested to add more filters. It will make sense to elaborate why this benefits the project, what can be achieved by the new hook that could not be done before, or is at least easier now.
This will increase the chances of the ticket being taken care of in my experience.