Drop the contact-list whitelist flow. The new block_phone screen has two cards:
- Permiso de llamadas: switch wired to the device setting blockUnknownNumbers, saved through deviceSettingsUpdateProvider (same pattern as disable_functions)
- Notificación de bloqueos: tappable card that navigates to the new blocked_calls subroute
The blocked_calls screen reads callHistoryProvider from sf_shared and filters by isBlocked == true. Added blockUnknownNumbers to DeviceSettingsEntity and Model + mappers, new tracking event legacy_settings_block_phone_toggled, and i18n keys across the 6 locales. Removed old contact-list code (controller, sheets, repository, contacts/form providers, controller test).