[REF] test_themes: remove legacy patch

This commit removes the use of legacy patch by using the modern patch.

closes odoo/design-themes#685

Related: odoo/enterprise#45271
Related: odoo/odoo#130867
Signed-off-by: Samuel Degueldre (sad) <sad@odoo.com>

test_themes/static/src/systray_items/website_switcher.js

@@ -1,14 +1,14 @@
 /** @odoo-module **/
 
-import { patch } from '@web/legacy/js/core/utils';
+import { patch } from "@web/core/utils/patch";
 import { useService } from '@web/core/utils/hooks';
 import { WebsiteSwitcherSystray } from '@website/systray_items/website_switcher';
 
 const { onMounted, useState } = owl;
 
-patch(WebsiteSwitcherSystray.prototype, 'test_themes_website_switcher_systray', {
+patch(WebsiteSwitcherSystray.prototype, {
     setup() {
-        this._super();
+        super.setup();
 
         this.orm = useService('orm');
         this.tooltips = useState({});