[UI] Build order visual enhancements (#9931)

* Adjust UI wording

- Separation between "items" and "stock"

* Add info panel if build order has no required items

* Fixes for playwright testing

- Ensure cookies are completely cleaned  between sessions
- Fix base URL based on vite command
- Fix samesite cookie mode
- Prevent /static/ files being served by web server on :8000

* Remove gunicorn option

* Fix unit test

* Readjust base URL

* Simplify doCachedLogin

* Adjust text

* Ensure translations are extracted

- Otherwise, playwright will not find the right strings...

* Make admin test more reliable

* Remove asynciness

* Fix <AttachmentLink>

- Allow null "attachment" value

* Better implementation

* Cleanup

.github/workflows/qc_checks.yaml

@@ -609,7 +609,7 @@ jobs:
           invoke int.rebuild-thumbnails
       - name: Install dependencies
         run: |
-          invoke int.frontend-compile
+          invoke int.frontend-compile --extract
           cd src/frontend && npx playwright install --with-deps
       - name: Run Playwright tests
         id: tests