chore: improve reliability of webauthn e2e test (#8400)

- This test is the source of many transient errors https://codeberg.org/forgejo/forgejo/issues/8359#issuecomment-5655557 and is semi-reproducible locally. Any debugging code that is added will result in the error no longer being reproducible, making it hard to say why this is failing.
- It no longer seems necessary to add this `waitForURL` call as Playwright now seems to gracefully handle the case where we want to go to a specific page while playwright might still be navigating to another URL that was initiated by clicking on a button - thus removing the source of the transient error altogether.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/8400
Reviewed-by: Beowulf <beowulf@beocode.eu>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>

tests/e2e/webauthn.test.e2e.ts

@@ -42,7 +42,6 @@ test('WebAuthn register & login flow', async ({browser, request}, workerInfo) =>
     await page.locator('div[aria-label="Profile and settings…"]').click();
     await page.getByText('Sign out').click();
   }).toPass();
-  await page.waitForURL(`${workerInfo.project.use.baseURL}/`);
 
   // Login.
   response = await page.goto('/user/login');