fix: correct voice limit setting description to reflect server-side enforcement

The Room Settings description still said 'Enforced locally by Lotus Chat
clients' from before the voice-limit-guard was deployed. The cap is now
enforced server-side (via the lk-jwt-service guard) for all Matrix clients.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/app/features/common-settings/general/RoomVoiceLimit.tsx

@@ -57,7 +57,7 @@ export function RoomVoiceLimit({ permissions }: RoomVoiceLimitProps) {
     >
       <SettingTile
         title="Voice Channel Limit"
-        description="Set the maximum number of participants allowed in this room's voice call. Set to 0 for no limit. Enforced locally by Lotus Chat clients."
+        description="Set the maximum number of participants allowed in this room's voice call. Set to 0 for no limit. Enforced on the server for all Matrix clients."
       >
         <Box as="form" onSubmit={handleSubmit} gap="200" alignItems="Center">
           <Box style={{ maxWidth: '100px' }} grow="Yes">