fix: yarn install failed for rancher-extension-stackstate

[a110605]

Summary

Fixes # check-plugins-build / validate (pull_request) CI failed
https://github.com/rancher/dashboard/actions/runs/18522411120/job/52785189448?pr=15625

Occurred changes and/or fixed issues

The PR changes rancher-extension-stackstate minimial node requirement to 22 which causes build-plugin.yaml yarn install failed.

Technical notes summary

Areas or cases that should be tested

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[richard-cox]

We use the node-version-file approach to ensure all places that reference node versions (19) use the same one.

Until we resolve this stackstack will be limited to the same node version of shell + the dashboard as a whole

[a110605]

We use the node-version-file approach to ensure all places that reference node versions (19) use the same one.

Until we resolve this stackstack will be limited to the same node version of shell + the dashboard as a whole

Will we ask rancher-extension-stackstate to downgrade their required node to 20 ?

[richard-cox]

Just worked this through with Alex and we'll temp disable that extension (#15629) and discuss with stackstate on node version