feat: show vue node settings toggle and show banner to switch back (#6382)

## Summary

- When switching from litegraph to vue nodes, show a toast that opens
settings to switch back
- Show a toggle in settings under Vue nodes for now called Modern Node
Design (Vue Nodes)
- Plan to update all the nomenclature as we get closer to GA

## Screenshots (if applicable)

<img width="1480" height="911" alt="image"
src="https://github.com/user-attachments/assets/fa3a34b9-2631-4175-917a-aa319f9fe415"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6382-feat-show-vue-node-settings-toggle-and-show-banner-to-switch-back-29b6d73d365081d29252c83349f06c0a)
by [Unito](https://www.unito.io)

---------

Co-authored-by: github-actions <github-actions@github.com>

src/locales/en/main.json

@@ -1820,8 +1820,12 @@
       }
     }
   },
+  "vueNodesMigration": {
+    "message": "Prefer the classic node design?",
+    "button": "Open Settings"
+  },
   "vueNodesBanner": {
     "message": "Nodes just got a new look and feel",
     "tryItOut": "Try it out"
   }
-}
+}