Renders the `core/site-tagline` block on the server.

function render_block_core_site_tagline( $attributes ) {
	$site_tagline = get_bloginfo( 'description' );
	if ( ! $site_tagline ) {
		return;
	}
	$align_class_name   = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}";
	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $align_class_name ) );

	return sprintf(
		'
%2$s
',
		$wrapper_attributes,
		$site_tagline
	);
}