fix : cmd + shift만 눌러도 redo되던 문제 해결

Author: kimnamheeee

client/src/components/MindMapCanvas/index.tsx

@@ -52,7 +52,7 @@ export default function MindMapCanvas({ showMinutes, handleShowMinutes }) {
   useWindowEventListener("keydown", (e) => {
     e.preventDefault();
     if (e.metaKey || e.ctrlKey) {
-      if (e.shiftKey && e.code) redo();
+      if (e.shiftKey && e.code === "KeyZ") redo();
       switch (e.code) {
         case "KeyZ":
           undo();