[Support request] Using register_block_style to create custom styles for core blocks

Hi,

Is it possible to use Generatepress Elements to register custom style for one of the core blocks?
I want to add selector of styles for the bullet list core block.
Until now I was using a child theme of GP to add register_block_style in child theme functions.php file. Is it possible to achieve the same functionality without the child theme?

here is sample code if you need it for reference:

add_action('init', function() {
    register_block_style('core/list', [
		'name' => 'brand-list',
		'label' => __('Branded List', 'generatepress'),
	]);
});