Hot to enable publishability for a post type without auto-publish?

Yeah the filter was the key! I have this as part of a class and seems to work fine:

add_filter('wpdc_publish_after_save', [$this, 'prevent_autopublish_for_konyv'], 10, 3);

public function prevent_autopublish_for_konyv($publish_to_discourse, $post_id, $post)
	{
		if ('konyv' === get_post_type($post)) {
			return false; // Prevent auto-publishing for 'konyv' post type
		}
		return $publish_to_discourse; // Allow normal behavior for other post types
	}