ci(harmony): HAP 收尾 + 缓存配额修复（PR 不再写 1.77 GB 大缓存） - #1239

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/

The process '/usr/bin/git' failed with exit code 128