Feat: Vue Node Slot Improvements (#6359)

## Summary

Several fixes and improvements to the slot behavior on Vue nodes.

## Changes

- **What**: Restore the pseudo-slots, if there are slots being hidden by
collapse
- **What**: Connections while collapsed
- **What**: Display the links in a more reasonable location
- **What**: Fixes styling of linked widgets
- **What**: [~Fix reconnecting logic to prioritize newly disconnected
and now empty
slots~](https://github.com/Comfy-Org/ComfyUI_frontend/pull/6370)

## Review Focus

<!-- Critical design decisions or edge cases that need attention -->

<!-- If this PR fixes an issue, uncomment and update the line below -->
<!-- Fixes #ISSUE_NUMBER -->

## Screenshots (if applicable)


https://github.com/user-attachments/assets/913cfb8f-acdd-4f3d-b619-c280cc11cce5


<!-- Add screenshots or video recording to help explain your changes -->

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6359-WIP-Collapsed-nodes-multislots-29b6d73d3650817289d5f0a8efdade84)
by [Unito](https://www.unito.io)

---------

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

src/renderer/extensions/vueNodes/widgets/components/layout/index.ts

@@ -2,8 +2,8 @@ import { cn } from '@/utils/tailwindUtil'
 
 export const WidgetInputBaseClass = cn([
   // Background
-  'bg-node-component-widget-input-surface',
-  'text-node-component-widget-input',
+  'not-disabled:bg-node-component-widget-input-surface',
+  'not-disabled:text-node-component-widget-input',
   // Outline
   'border-none',
   'outline outline-offset-[-1px] outline-node-stroke',