Implement a legacy canvas widget for vue mode (#6011)

![updated-legacy-widget](https://github.com/user-attachments/assets/3f0a1623-9445-4059-acbb-086baec54980)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6011-Implement-a-legacy-canvas-widget-for-vue-mode-2896d73d36508127a5d1debcccb519a0)
by [Unito](https://www.unito.io)

---------

Co-authored-by: GitHub Action <action@github.com>

tests-ui/tests/renderer/extensions/vueNodes/widgets/composables/useWidgetRenderer.test.ts

@@ -123,10 +123,6 @@ describe('widgetRegistry', () => {
       expect(shouldRenderAsVue({ type: 'combo' })).toBe(true)
     })
 
-    it('should return false for unknown types', () => {
-      expect(shouldRenderAsVue({ type: 'unknown_type' })).toBe(false)
-    })
-
     it('should respect options while checking type', () => {
       const widget = { type: 'text', options: { someOption: 'value' } }
       expect(shouldRenderAsVue(widget)).toBe(true)