Display expired listings in search results

functions.php

<?php

// Display Expired listings in search results
add_filter( 'get_job_listings_query_args', function( $args ) {
    $args['post_status'] = [ 'publish', 'expired' ];
    return $args;
}, 100 );

// Make Expired listings content public
add_action( 'init', function() {
    global $wp_post_statuses;
    if ( is_array( $wp_post_statuses ) && ! empty( $wp_post_statuses['expired'] ) ) {
        $wp_post_statuses['expired']->public = true;
    }
}, 100 );