Override SPFx context properties during Playwright E2E tests

While creating new E2E tests for a SharePoint Framework solution, I wanted to test the solution with different permission sets. Usually, when you run your tests, you start these up with a user with the required permissions to run the tests. Instead of creating a new user with different permissions or different sites/pages to perform the tests, I looked into the possibility of overriding the context properties of SPFx.