Remove NODE_OPTIONS and add demo build to CI

- Removed unnecessary NODE_OPTIONS from build:demo and watch:demo scripts
- Added Demo job to CI workflow to build demo on every push/PR

Co-authored-by: fregante <1402241+fregante@users.noreply.github.com>

Author: Copilot

.github/workflows/main.yml

@@ -34,3 +34,13 @@ jobs:
           node-version-file: package.json
       - run: npm install
       - run: npx vitest
+
+  Demo:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: package.json
+      - run: npm install
+      - run: npm run build:demo

package.json

@@ -29,8 +29,8 @@
 	],
 	"scripts": {
 		"test": "xo && tsd && vitest run",
-		"build:demo": "NODE_OPTIONS='' vite build demo",
-		"watch:demo": "NODE_OPTIONS='' vite demo"
+		"build:demo": "vite build demo",
+		"watch:demo": "vite demo"
 	},
 	"xo": {
 		"parser": "@typescript-eslint/parser",