task: #3635710 Update Node.js to >= 24.0

Moves the Node.js pins on 1.0.x to 24, the floor Drupal core main declares in core/package.json. Node.js 20 reached end of life on 30 April 2026.

Issue: https://www.drupal.org/i/3635710

• package.json: engines "node": ">= 24.0".
• CI: .gitlab-ci.yml Node tarball latest-v24.x.
• DDEV: not present.
• Upsun: not present.
• Lockfiles are no longer committed: none was tracked, and .gitignore now ignores them.

Checked in node:24 (v24.22.2) with no lockfile present: npm install and the test dry run (6 scenarios) pass. MR pipeline 1033685 is green.

AI-Generated: Yes

Checkpoints:

• File an issue
• Addition/Change/Update/Fix
• Testing to ensure no regression
• Automated unit testing coverage
• Automated functional testing coverage
• UX/UI designer responsibilities
• Readability
• Accessibility
• Performance
• Security
• Developer Documentation
• User Guide Documentation
• Reviewed by human
• Code review by maintainers
• Full testing and approval
• Credit contributors
• Review with the product owner
• Release notes snippet
• Release