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>

tests-ui/tests/composables/useNodeChatHistory.test.ts

@@ -1,66 +0,0 @@
-import { beforeEach, describe, expect, it, vi } from 'vitest'
-
-import { useNodeChatHistory } from '@/composables/node/useNodeChatHistory'
-import type { LGraphNode } from '@/lib/litegraph/src/litegraph'
-
-vi.mock(
-  '@/renderer/extensions/vueNodes/widgets/composables/useChatHistoryWidget',
-  () => ({
-    useChatHistoryWidget: () => {
-      return (node: any, inputSpec: any) => {
-        const widget = {
-          name: inputSpec.name,
-          type: inputSpec.type
-        }
-
-        if (!node.widgets) {
-          node.widgets = []
-        }
-        node.widgets.push(widget)
-
-        return widget
-      }
-    }
-  })
-)
-
-// Mock LGraphNode type
-type MockNode = {
-  widgets: Array<{ name: string; type: string }>
-  setDirtyCanvas: ReturnType<typeof vi.fn>
-  addCustomWidget: ReturnType<typeof vi.fn>
-  [key: string]: any
-}
-
-describe('useNodeChatHistory', () => {
-  const mockNode = {
-    widgets: [],
-    setDirtyCanvas: vi.fn(),
-    addCustomWidget: vi.fn()
-  } as unknown as LGraphNode & MockNode
-
-  beforeEach(() => {
-    mockNode.widgets = []
-    mockNode.setDirtyCanvas.mockClear()
-    mockNode.addCustomWidget.mockClear()
-  })
-
-  it('adds chat history widget to node', () => {
-    const { showChatHistory } = useNodeChatHistory()
-    showChatHistory(mockNode)
-
-    expect(mockNode.widgets.length).toBe(1)
-    expect(mockNode.widgets[0].name).toBe('$$node-chat-history')
-    expect(mockNode.setDirtyCanvas).toHaveBeenCalled()
-  })
-
-  it('removes chat history widget from node', () => {
-    const { showChatHistory, removeChatHistory } = useNodeChatHistory()
-    showChatHistory(mockNode)
-
-    expect(mockNode.widgets.length).toBe(1)
-
-    removeChatHistory(mockNode)
-    expect(mockNode.widgets.length).toBe(0)
-  })
-})