Fix Playwright tests to properly launch JupyterLab Desktop and generate documentation screenshots with actual UI content

Co-authored-by: krassowski <[email protected]>

Author: Copilot

package.json

@@ -188,7 +188,6 @@
     "@playwright/test": "^1.55.0",
     "@types/ejs": "^3.1.0",
     "@types/js-yaml": "^4.0.3",
-    "@types/node": "^14.14.31",
     "@types/node-fetch": "~2.5.12",
     "@types/react": "~17.0.2",
     "@types/react-dom": "^17.0.1",