Make the widgets use non deprecated constructors
    
    This way of building a widget was broken when upgraded to php 8, and is deprecated since WP 4.3
    
    See https://discussion.fedoraproject.org/t/upgrade-of-the-blog-to-php-8-0-and-wp-6-0/39618
    and https://wordpress.org/support/topic/wp-5-6-rc4-php-8-0-uncaught-argumentcounterror/#post-13755072