- Adjusts tests in `browser_relay_signup_flow_showToAllBrowsers.js` to validate the presence of `href` attributes for terms of service and privacy notice links. - Modifies `FirefoxRelay.sys.mjs` to use `querySelector` to find links and adding conditional checks to safely assign `href` attributes for the terms of service and privacy policy links. Differential Revision: https://phabricator.services.mozilla.com/D232636