using jQuery on only one page

You don’t need to add it on a template, you can use the wp_add_inline_script() function. It’d be something like:

function tabs_enqueue() {
    if(is_page( 205 )) {
        wp_enqueue_script( 'ui', get_template_directory_uri() . '/js/ui/jquery-ui.min.js', [], '1.8', true);
        wp_add_inline_script( 'ui',
            'jQuery(window).load(function() {
                //code here
            });' );
    }
}
add_action('wp_enqueue_scripts', 'tabs_enqueue');

Hope it helps!