spawn_process never throws for a binary it cannot start, benchctl's tests go green on Windows, and CHANGELIST.md covers the 298 merged PRs it had lost since the RC2 gate - #4050

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, emscripten-core/setup-emsdk@v11. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/