Feat/vue nodes try it now banner (#6362)

## Summary

Banner to try vue nodes. Clicking try it now will flip
shouldRenderVueNodes = true.

## Screenshots (if applicable)

<img width="1512" height="824" alt="image"
src="https://github.com/user-attachments/assets/dfd4bdc3-6753-45ee-86f1-ed7dc077f868"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6362-Feat-vue-nodes-try-it-now-banner-29b6d73d365081c29f04f9126f06ee9d)
by [Unito](https://www.unito.io)

browser_tests/fixtures/utils/litegraphUtils.ts

@@ -503,7 +503,7 @@ export class NodeReference {
       for (const position of clickPositions) {
         // Clear any selection first
         await this.comfyPage.canvas.click({
-          position: { x: 50, y: 50 },
+          position: { x: 250, y: 250 },
           force: true
         })
         await this.comfyPage.nextFrame()