Cleanup: Consistent use of Nodes 2.0 in user facing strings. (#6898)

https://github.com/Comfy-Org/ComfyUI_frontend/issues/6888

## Summary

Did a quick pass to find user facing strings. Not sure if this gets them
all.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6898-Cleanup-Consistent-use-of-Nodes-2-0-in-user-facing-strings-2b66d73d36508124aee2f5f8373a4b60)
by [Unito](https://www.unito.io)

src/composables/useCoreCommands.ts

@@ -330,7 +330,7 @@ export function useCoreCommands(): ComfyCommand[] {
       label: () =>
         `Experimental: ${
           useSettingStore().get('Comfy.VueNodes.Enabled') ? 'Disable' : 'Enable'
-        } Vue Nodes`,
+        } Nodes 2.0`,
       function: async () => {
         const settingStore = useSettingStore()
         const current = settingStore.get('Comfy.VueNodes.Enabled') ?? false