wip. revert changes

Author: GoodDayForSurf

packages/devextreme-cli/testing/app-template.test.shared.js

@@ -75,7 +75,7 @@ module.exports = (env, { port } = { port: '8080' }) => {
                                 console.log('-------openPage--->', url);
                                 await page.goto('about:blank');
                                 await page.setViewport(viewport);
-                                await page.waitForTimeout(5000);
+                                await new Promise(resolve => setTimeout(resolve, 5000));
                                 console.log('-------openPage-goto-->', url, new Date().toLocaleTimeString());
                                 await page.goto(url, {
                                     waitUntil: 'networkidle0',