Style: Design System use across more components (#6705)

## Summary

Only remaining use is in `buttonTypes.ts` which @viva-jinyi is going to
be working on to consolidate our different buttons soon.

## Changes

- **What**: Replace light/dark colors with theme aware design system
tokens.

## Review Focus

Double check the chosen colors for the components

## Screenshots

| Before | After |
| ------ | ----- |
| <img width="607" height="432" alt="image"
src="https://github.com/user-attachments/assets/6c0ee6d6-819f-40b1-b775-f8b25dd18104"
/> | <img width="646" height="488" alt="image"
src="https://github.com/user-attachments/assets/9c8532de-8ac6-4b48-9021-3fd0b3e0bc63"
/> |

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6705-Style-WIP-Design-System-use-across-more-components-2ab6d73d365081619115fc5f87a46341)
by [Unito](https://www.unito.io)

---------

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

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

@@ -84,7 +84,6 @@
 
     <template v-if="!isCollapsed">
       <div class="relative mb-1">
-        <div :class="separatorClasses" />
         <!-- Progress bar for executing state -->
         <div
           v-if="executing && progress !== undefined"
@@ -388,7 +387,6 @@ const hasCustomContent = computed(() => {
 })
 
 // Computed classes and conditions for better reusability
-const separatorClasses = 'bg-component-node-border h-px mx-0 w-full lod-toggle'
 const progressClasses = 'h-2 bg-primary-500 transition-all duration-300'
 
 const { latestPreviewUrl, shouldShowPreviewImg } = useNodePreviewState(