HOLI-11059: store guest mode in cookie for web

apps/web/public/documents/privacyPolicy_de.html

apps/web/public/documents/privacyPolicy_en.html

core/auth/screens/Login.tsx

...ens/onboarding/helpers/__tests__/guestModeStorage.test.ts

...onboarding/helpers/__tests__/guestModeStorage.web.test.ts

core/screens/onboarding/helpers/guestModeStorage.ts

core/screens/onboarding/helpers/guestModeStorage.web.ts

core/screens/onboarding/hooks/__tests__/useGuestMode.test.ts

core/screens/onboarding/hooks/useGuestMode.ts

core/screens/onboarding/steps/CreateAccount.tsx

core/screens/onboarding/steps/EmailVerification.tsx

...screens/onboarding/steps/__tests__/CreateAccount.test.tsx

...ens/onboarding/steps/__tests__/EmailVerification.test.tsx

core/screens/userprofile/components/AnonymousProfileView.tsx

...rofile/components/__tests__/AnonymousProfileView.test.tsx