ci: bump Node.js to 24.19.0

[devin-ai-integration]

Summary

The Publish workflow failed at "Create new versions" because .tool-versions pins Node 20, which @changesets/cli@3.0.0 rejects:

ERR_PNPM_UNSUPPORTED_ENGINE  Your Node version is incompatible with "@changesets/cli@3.0.0".
Expected version: ^22.11 || ^24 || >=26   Got: v20.20.2

All workflows derive node-version from .tool-versions (TOOL_VERSION_NODEJS), so bumping the single pin to 24.19.0 fixes publish and moves CI off EOL Node 20. Verified pnpx @changesets/cli version succeeds locally on Node 24.19.0 with pnpm 10.34.5.

The failed run published nothing and left the changeset intact, so re-running Publish on main after this lands should complete the release.

Link to Devin session: https://app.devin.ai/sessions/199a589e289e4bcab730e3a82d9ae3e3

[devin-ai-integration]

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