641da949a9
Previously, users could retain access to servers removed from their promo group by re-submitting already-connected UUIDs in country selection requests. The validation allowed any UUID present in current connected_squads, bypassing promo group checks. Now all selected server UUIDs must be in the user's allowed promo group set. Unauthorized servers are rejected (cabinet/bot) or filtered out (miniapp). Fixes authorization bypass across all 3 surfaces: cabinet, Telegram bot, and miniapp.