handleGetWordLength가 반대로 작동하는 문제 수정

@@ -48,9 +48,9 @@ export const GameBoard: React.FC<GameBoardProps> = ({ isInGame }) => {
 
   const handleGetWordLength = useCallback((rawMessage: RawMessage) => {
     if (rawMessage.type === MessageType.GAME_WORD) {
-      if (wordChosen !== '') {
+      if (wordChosen === '') {
         const { length } = rawMessage.message as { length: number };
-        setWordChosen('_'.repeat(length));
+        setWordChosen('_' + ' _'.repeat(length-1));
       }
     }
   }, [wordChosen]);