feat: Allow passing iterators to Mesh.setVertexData() - #970

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8, actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8, denoland/setup-deno@041b854f97b325bd60e53e9dc2de9cb9f9ac0cba. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/