DYN-5921: Clear code block edit flag on unload and focus loss - #17311

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: neofinancial/ticket-check-action@v2. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/