Fix regression of main window dragging on Windows - #59967

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: pnpm/action-setup@fe02b34f77f8bc703788d5817da081398fad5dd2. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/