fix : case문 안 break 추가

Author: Minju9187

client/src/components/MindMapCanvas/index.tsx

@@ -82,6 +82,7 @@ export default function MindMapCanvas({ showMinutes, handleShowMinutes }) {
       case "Escape":
         groupRelease();
         selectNode({});
+        break;
       case "Tab":
         if (e.shiftKey) {
           moveToPreviousNode(data, selectedNode, selectNode);