[iOS] number of unread msg is not visible

I’m not sure if the issue is actual for android, but for all themes I see that number of unread msg is not visible.

The issue identifies iOS Telegram themes and includes a screenshot, but it names no repository file, test, or entry point. First reproduce the missing unread-message count across the themes on iOS, then locate the relevant theme assets and verify that the unread count is visible without disrupting the existing theme appearance.

Written by the indexing model from the issue text.