✨ Introduce bot v2 in builder (#328)

Also, the new engine is the default for updated typebots for viewer

Closes #211

apps/builder/src/features/blocks/integrations/chatwoot/chatwoot.spec.ts

@@ -36,7 +36,7 @@ test.describe('Chatwoot block', () => {
     await page.getByLabel('Phone number').fill('+33654347543')
     await page.getByRole('button', { name: 'Preview', exact: true }).click()
     await expect(
-      page.getByText("Chatwoot won't open in preview mode").nth(0)
+      page.getByText('Chatwoot block is not supported in preview').nth(0)
     ).toBeVisible()
   })
 })