Fix: Simplify the widget state logic (#6741)

## Summary

Fixes the case where a value is updated in the graph but the result
doesn't reflect on the widget representation on the relevant node.

## Changes

- **What**: Uses vanilla Vue utilities instead of a special utility
- **What**: Fewer places where state could be desynced.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6741-Fix-WIP-Simplify-the-widget-state-logic-2af6d73d36508160b729db50608a2ea9)
by [Unito](https://www.unito.io)

---------

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

src/renderer/extensions/vueNodes/components/LGraphNode.vue

@@ -8,7 +8,7 @@
     :data-node-id="nodeData.id"
     :class="
       cn(
-        'bg-component-node-background lg-node absolute',
+        'bg-component-node-background lg-node absolute pb-1',
 
         'contain-style contain-layout min-w-[225px] min-h-(--node-height) w-(--node-width)',
         'rounded-2xl touch-none flex flex-col',