Exclude pages with meta value 'hide_page_in_menus' set to 1 from wp_list_pages

hip_exclude_from_wp_list_pages.php

add_filter( 'get_pages', 'hip_exclude_from_wp_list_pages', 10, 2 );
/**
 * Exclude pages with meta value 'hide_page_in_menus' set to 1 from wp_list_pages
 * @param  array $pages 
 * @param  array $args  
 * @return array  $pages
 */
function hip_exclude_from_wp_list_pages( $pages, $args ) {
    
    // Check for 'walker' key to see if this is being used by wp_list_pages()
    if( array_key_exists( 'walker', $args ) ) {    
        foreach ( $pages as $key => $item ) {
            $hide_page = get_post_meta( $item->ID, 'hide_page_in_menus', true );        
            if( $hide_page == 1 ) unset( $pages[$key] );
        }
    }

    return $pages;
}