test: add test for terms of use before registration [WPB-24831] (#21156)

* test(registration): add test for terms of use before registration

This commit implements TC-1621 to ensure users are properly
informed about the terms of use when creating a personal account
via the SSO login flow.

The implemented scenario verifies:
- Entering an unregistered email on the SSO sign-in page.
- Navigating to the personal account registration page.
- The visibility of the Terms of Use link.
- Opening the link and validating the correct routing to the
  `/legal#terms` URL in a new tab.

Refs: WPB-24831

* test(registration): refactor popup handling for terms of use test

The test now uses `Promise.all` with `page.waitForEvent('popup')`
instead of `context().waitForEvent('page')` to handle the new tab
creation.

Refs: WPB-24831

Author: screendriver

apps/webapp/test/e2e_tests/specs/Registration/registration.spec.ts

@@ -32,6 +32,29 @@ test.describe('Registration', () => {
       addCreatedUser(userA);
     });
 
+    test(
+      'I want to be informed about terms of personal account before registration',
+      {tag: ['@TC-1621', '@regression']},
+      async ({pageManager}) => {
+        const newUser = getUser();
+        const unregisteredEmail = newUser.email;
+
+        await pageManager.openMainPage();
+        const {pages} = pageManager.webapp;
+
+        await goToPersonalRegistration(pageManager, unregisteredEmail);
+
+        await expect(pages.registration().termsLabel).toBeVisible();
+
+        const [newTab] = await Promise.all([
+          pageManager.page.waitForEvent('popup'),
+          pages.registration().termsLabel.click(),
+        ]);
+
+        await expect(newTab).toHaveURL(/legal#terms/);
+      },
+    );
+
     test(
       'I want to be notified if the email address I entered during registration has already been registered',
       {tag: ['@TC-1623', '@TC-1640', '@regression']},