Remove the Custom Sidebars plugin override logic for widget output

disable-custom-sidebars-context.php

<?php

// Remove the Custom Sidebars plugin override logic for widget output.
add_action(
    'plugins_loaded',
    function() {
        if ( class_exists( 'CustomSidebarsVisibility' ) ) {
            remove_filter( 
                'sidebars_widgets',
                array( CustomSidebarsVisibility::instance(), 'sidebars_widgets' )
            );
        }
    }
);