fix: enable workaround for nativeWindowOpen hang (#22825)

spec-main/api-web-contents-spec.ts

@@ -1829,4 +1829,26 @@ describe('webContents module', () => {
       expect(body).to.equal('401');
     });
   });
+
+  it('emits a cancelable event before creating a child webcontents', async () => {
+    const w = new BrowserWindow({
+      show: false,
+      webPreferences: {
+        sandbox: true
+      }
+    });
+    w.webContents.on('-will-add-new-contents' as any, (event: any, url: any) => {
+      expect(url).to.equal('about:blank');
+      event.preventDefault();
+    });
+    let wasCalled = false;
+    w.webContents.on('new-window' as any, () => {
+      wasCalled = true;
+    });
+    await w.loadURL('about:blank');
+    await w.webContents.executeJavaScript(`window.open('about:blank')`);
+    await new Promise((resolve) => { process.nextTick(resolve); });
+    expect(wasCalled).to.equal(false);
+    await closeAllWindows();
+  });
 });