Cartzilla - Change Dokan vendor products column

functions.php

if ( ! function_exists( 'cartzilla_dokan_vendor_page_columns' ) ) {
    function cartzilla_dokan_vendor_page_columns( $columns ) {
        $layout       = get_theme_mod( 'store_layout', 'left' );

        if ( 'left' === $layout || 'right' === $layout ) {
            $columns = 2;
        } else {
            $columns = 3;
        }
        return $columns;
    }
}