WordPress как на ладони
Недорогой хостинг для сайтов на WordPress: wordpress.jino.ru
функция не описана

use_block_editor_for_post_type() WP 5.0.0

Return whether a post type is compatible with the block editor.

The block editor depends on the REST API, and if the post type is not shown in the REST API, then it won't work with the block editor.

Хуки из функции
Возвращает

true/false. Whether the post type can be edited with the block editor.

Использование

use_block_editor_for_post_type( $post_type );
$post_type(строка) (обязательный)
The post type.

Код use block editor for post type: wp-admin/includes/post.php VER 5.1.1

<?php
function use_block_editor_for_post_type( $post_type ) {
	if ( ! post_type_exists( $post_type ) ) {
		return false;
	}

	if ( ! post_type_supports( $post_type, 'editor' ) ) {
		return false;
	}

	$post_type_object = get_post_type_object( $post_type );
	if ( $post_type_object && ! $post_type_object->show_in_rest ) {
		return false;
	}

	/**
	 * Filter whether a post is able to be edited in the block editor.
	 *
	 * @since 5.0.0
	 *
	 * @param bool   $use_block_editor  Whether the post type can be edited or not. Default true.
	 * @param string $post_type         The post type being checked.
	 */
	return apply_filters( 'use_block_editor_for_post_type', true, $post_type );
}