Refactor/#239-B: 한글 입력 소켓 메시지 적용 (#240)

Author: dohun31

client/src/components/Mom/Block/index.tsx

@@ -154,7 +154,7 @@ function Block({ id, onKeyDown, index }: BlockProps) {
 
       const remoteInsertion = localInsertCRDT(previousLetterIndex, letter);
 
-      socket.emit('text-insertion', id, remoteInsertion);
+      socket.emit(SOCKET_MESSAGE.BLOCK.INSERT_TEXT, id, remoteInsertion);
     });
   };