Include Custom Post Types In WordPress "Activity" Dashboard Widget

wp-include-cpt-in-dashboard-activity-widget.php

<?php

add_filter('dashboard_recent_posts_query_args', function(array $queryArgs) {
    $postTypes = get_post_types([
        'public'          => true,
        'capability_type' => 'post',
    ]);

    if (is_array($postTypes)) {
        $queryArgs['post_type'] = $postTypes;
    }

    return $queryArgs;
}, 15);