chore: update litegraph to 0.8.31

Author: huchenlei

package-lock.json

@@ -73,7 +73,7 @@
   "dependencies": {
     "@atlaskit/pragmatic-drag-and-drop": "^1.3.1",
     "@comfyorg/comfyui-electron-types": "^0.2.16",
-    "@comfyorg/litegraph": "^0.8.30",
+    "@comfyorg/litegraph": "^0.8.31",
     "@primevue/themes": "^4.0.5",
     "@vueuse/core": "^11.0.0",
     "@xterm/addon-fit": "^0.10.0",