- handleSelectCallback: disabling RPG also disables League; enabling
League when RPG is off shows toast error via answerCbWithText
- handleLeagueToggleCmd (/leaguetoggle): rejects with message if RPG off
- leagueToggleCallback (inline): rejects with message if RPG off
- buildSettingsKeyboard: League status shows as 'off' when RPG is disabled
(even if the DB still has LeagueOptIn=true, since RPG disable forces it false)