✨(frontend) increase chat message limit to 2000 characters

Expand text area input character limit from default to 2000 characters
to allow users more space for detailed chat messages.

Provides better user experience for longer form communication within
chat interface while maintaining reasonable message size constraints.

src/frontend/src/features/rooms/livekit/components/chat/Input.tsx

@@ -101,7 +101,7 @@ export const ChatInput = ({
         }}
         placeholderStyle={'strong'}
         spellCheck={false}
-        maxLength={500}
+        maxLength={2000}
         aria-label={t('textArea.label')}
       />
       <Button