Dashboards: Enable scenes by default (#93818)

* Mark Scenes feature toggles as GA

* Move old arch e2e to a new folder

* Run E2E on scenes by default

* Upgrade e2e-selectors to ensure the tests in Playwright works

e2e/utils/support/url.ts

@@ -1,3 +1,5 @@
+import { e2e } from '../index';
+
 const getBaseUrl = () => Cypress.env('BASE_URL') || Cypress.config().baseUrl || 'http://localhost:3000';
 
 export const fromBaseUrl = (url = '') => new URL(url, getBaseUrl()).href;