fix(ci): add build step to E2E workflow

E2E workflow now builds configurator.html from src/ before
Playwright generates deploy.sh. Ensures E2E always tests the
current source, not a potentially stale committed build.

Author: ngjinshan

.github/workflows/e2e.yml

@@ -990,6 +990,10 @@ jobs:
         working-directory: .
         run: npm install playwright && npx playwright install chromium --with-deps
 
+      - name: Build configurator.html from src/
+        working-directory: .
+        run: npm install && node scripts/build.js
+
       - name: Generate deploy.sh from configurator.html
         working-directory: .
         run: |