This update fixes an internal automated test for website module setup so it can reliably find the right page elements. It helps keep future website-related changes safer by reducing false test failures during development.

For a strange reason, another pull request revealed some errors in this test/

- `#top_menu a[href^='${url}'` is not a valid selector
- There are multiple `button.btn-primary` on the page

This update fixes several small HTML validity issues in Odoo's default website and web templates, including outdated browser compatibility values, phone links with spaces, and script attributes. These changes help pages pass standard validation checks and reduce the risk of display or integration issues without changing visible functionality.

No related task, just a quick fix while we talked about valid HTML in a recent unrelated editor task.