Replace deprecated waitForNavigation method in Playwright tests #1848

Problem

Some functions in navigation.ts use the deprecated method waitForNavigation which causes race conditions.

Description

waitForNavigation should be replaced with waitForURL according to the documentation page: https://playwright.dev/docs/api/class-page#page-wait-for-url

Priority set to high because this issue might be causing Playwright failures. Which, in turn, might cause us to fail to see the changes on staging.