Fix check-plugins CI job

[a110605]

Summary

Fix https://github.com/harvester/dashboard/actions/runs/11025700963/job/30621227120?pr=1168

I tried using node 20 in creator package like https://github.com/rancher/dashboard/pull/11808/files did.

But @nuxt/babel-present-app is not compatible to node 20.....

Pin the @types/node to v16 instead.

PR Checklist

• Is this a multi-tenancy feature/bug?
  • Yes, the relevant RBAC changes are at:
• Do we need to backport changes to the old Rancher UI, such as RKE1?
  • Yes, the relevant PR is at:
• Are backend engineers aware of UI changes?
  • Yes, the backend owner is:

[torchiaf]

LGTM