Use fixed pixel distance for line Start and End handles - #4544

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: hendrikmuhs/ccache-action@v1.2, josStorer/get-current-time@v2.0.2. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/