fix(aws-vpclattice): close the real-cloud parity gaps in #1451 - #1551

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

479 provider file(s) lack a same-named file under server/<cloud>/ (docs/STRUCTURE.md §3, advisory)