fix(portal-plugin-onboarding): always show CLI install command in checklist - #1157

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: acifani/setup-tinygo@v2, actions/setup-go@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Restore cache failed: Dependencies file is not found in /home/runner/work/web/web. Supported file pattern: go.sum