Woocommerce product variation nicename in Cart and Order

function.php

add_filter( 'woocommerce_get_item_data', 'woocommerce_get_item_data', 10, 2);
function woocommerce_get_item_data($item_data, $cart_item) {
    $variation = $cart_item['variation'];
    // Format item data ready to display
    foreach ( $item_data as $key => $data ) {
        // Set hidden to true to not display meta on cart.
        if ( ! empty( $data['hidden'] ) ) {
            unset( $item_data[ $key ] );
            continue;
        }
        $taxonomy = array_search ($data['value'], $variation);
        $meta = get_post_meta($cart_item['variation_id'], 'attribute_'.$taxonomy, true);
        $term = get_term_by('slug', $meta, $taxonomy);

        if ( !empty( $term->name ) )
            $data['display'] = $term->name;
        else
            $data['display'] = str_replace('-',' ',$data['value'] );

        $item_data[ $key ]['key']     = ! empty( $data['key'] ) ? $data['key'] : $data['name'];
        $item_data[ $key ]['display'] = ! empty( $data['display'] ) ? $data['display'] : $data['value'];
    }
    return $item_data;
}