How to Change the WordPress Dashboard Title?

This code changes the WordPress dashboard title from “Dashboard” to a custom title like “WordPress Staging Site.”

function ts_custom_dashboard_name(){
        if ( $GLOBALS['title'] != 'Dashboard' ){
            return;
        }

        $GLOBALS['title'] =  __( 'WordPress Staging Site' ); 
    }

    add_action( 'admin_head', 'ts_custom_dashboard_name' );