Rename twenty-ui to twenty-ui-deprecated and twenty-new-ui to twenty-ui to prepare package release (#21315)

## Description

Promotes the next-gen UI library (formerly `twenty-new-ui`) to the name
**`twenty-ui`** (v0.1.0, publishable) and renames the old package to
**`twenty-ui-deprecated`**. Rewrites ~1,730 `twenty-ui` imports →
`twenty-ui-deprecated`, updates all configs/CI/Docker/deps, and migrates
twenty-front's `Toggle` to the new package (first consumer) as a
drop-in.

## Next steps
- Wire the `ui/v*` publish dispatch (`cd-deploy-tag.yaml` +
`.yarnrc.yml`), then tag `ui/v0.1.0` to publish.
- Continue migrating components from `twenty-ui-deprecated` →
`twenty-ui`.

packages/twenty-ui/scripts/visual-diff.sh

@@ -35,7 +35,15 @@ npx http-server storybook-static --port 6007 --silent &
 HTTP_PID=$!
 trap "kill $HTTP_PID 2>/dev/null || true" EXIT
 
-for i in $(seq 1 30); do curl -sf http://localhost:6007 > /dev/null 2>&1 && break; sleep 1; done
+SERVER_UP=false
+for i in $(seq 1 30); do
+  if curl -sf http://localhost:6007 > /dev/null 2>&1; then SERVER_UP=true; break; fi
+  sleep 1
+done
+if [[ "$SERVER_UP" != "true" ]]; then
+  echo "Storybook static server did not start on http://localhost:6007 after 30s" >&2
+  exit 1
+fi
 
 export STORYBOOK_URL="http://localhost:6007"
 npx vitest run