E2E/Playwright: Instantiate page in pw (#29765)

* instantiate page in pw

* update spec

* fix storage key and require user when logging in via API

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Co-authored-by: Mattermost Build <build@mattermost.com>

e2e-tests/playwright/support/ui/pages/index.ts

@@ -21,4 +21,5 @@ const pages = {
     DraftPage,
 };
 
-export {pages, ChannelsPage, LandingLoginPage, LoginPage, SignupPage, ScheduledDraftPage, DraftPage};
+export {ChannelsPage, LandingLoginPage, LoginPage, SignupPage, ScheduledDraftPage, DraftPage};
+export default pages;