Revert "Fix node searchbox default value setting (#150)" (#151)

This reverts commit 3dfef8a.

browser_tests/nodeSearchBox.spec.ts

@@ -1,6 +1,17 @@
 import { expect } from "@playwright/test";
-import { comfyPageFixture as test} from "./ComfyPage";
+import { ComfyPage, comfyPageFixture } from "./ComfyPage";
 
+export const test = comfyPageFixture.extend<{ comfyPage: ComfyPage }>({
+  comfyPage: async ({ comfyPage }, use) => {
+    await comfyPage.page.evaluate(async () => {
+      await window["app"].ui.settings.setSettingValueAsync(
+        "Comfy.NodeSearchBoxImpl",
+        "default"
+      );
+    });
+    await use(comfyPage);
+  },
+});
 
 test.describe("Node search box", () => {
   test("Can trigger on empty canvas double click", async ({ comfyPage }) => {

src/scripts/ui.ts

@@ -429,9 +429,9 @@ export class ComfyUI {
       options: ["default", "litegraph (legacy)"],
       defaultValue: "default",
       onChange: (value?: string) => {
+        if (value === undefined) return;
         if (!app.canvas) return;
 
-        value = value || "default";
         const useLitegraphSearch = value === "litegraph (legacy)";
         app.canvas.allow_searchbox = useLitegraphSearch;
         document.dispatchEvent(