List all the pages in list with `[child_pages_list]` shortcode in WordPress.

child-pages-list.php

<?php
add_shortcode( 'child_pages_list', function() {
	$args = array(
        'post_parent' => get_the_ID(),
        'post_type' => get_post_type(),
    );

    $posts = get_children( $args );

    ob_start();
    if( $posts ) {
        ?>
        <ul>
        <?php foreach( $posts as $single_post ) { ?>
            <li><a href="<?php echo get_permalink( $single_post->ID ); ?>"><?php echo $single_post->post_title; ?></a></li>
        <?php } ?>
        </ul>
        <?php
    }
    return ob_get_clean();
});