function gdt_blocks_class_rename() {
 if ( current_user_can( 'contributor' ) || current_user_can('author') ) {
  wp_enqueue_script( 'gdt-plugin-blacklist-blocks', get_stylesheet_directory_uri() . '/custom-js/guten-addons.js', array( 'wp-blocks', 'wp-hooks', 'wp-element', 'wp-edit-post' ));
 }
}
add_action( 'enqueue_block_editor_assets', 'gdt_blocks_class_rename' );

( function( wp ) {

function modifyLinkDestinationDefault(settings, name) {
    if (name !== "core/image") {
        return settings;
    }

    settings.attributes.linkDestination.default = "media";

    return settings;
}

wp.hooks.addFilter(
    "blocks.registerBlockType",
    "my-plugin/modify-linkDestination-default",
    modifyLinkDestinationDefault
);

} )( window.wp );


( function( wp ) {

function modifyLinkDestinationGalleyDefault(settings, name) {
    if (name !== "core/gallery") {
        return settings;
    }

    settings.attributes.linkTo.default = "media";

    return settings;
}

wp.hooks.addFilter(
    "blocks.registerBlockType",
    "my-plugin/modify-linkDestination-gallery-default",
    modifyLinkDestinationGalleyDefault
);

} )( window.wp );