Enable failing extension tests in test-plugins-build.sh

[rak-phillip]

Capi, Statckstate, and Harvester extensions are failing to build with the following error after bumping Vue to 3.5 ( #13085):

error  in ./index.ts

Syntax Error: Thread Loader (Worker 0)
[BABEL] /home/phillip/Development/rancher-dashboard/harvester-ui-extension/pkg/harvester/index.ts: decode_js.EntityDecoder is not a constructor (While processing: "/home/phillip/Development/rancher-dashboard/harvester-ui-extension/node_modules/@vue/cli-plugin-babel/preset.js")
    at Generator.next (<anonymous>)
    at Generator.next (<anonymous>)
    at Generator.next (<anonymous>)

This error appears to be related to past issues experienced in Dashboard related to issues with how yarn classic is managing packages that contain an alias. Related tickets:

• Update Yarn to latest stable version or migrate to a new package manager #12092
• Bump @aws-sdk/client-ec2 & @aws-sdk/client-iam to 3.658.1 #12089

Acceptance Criteria

• Capi, Stackstate, and Harvester extensions receive a resolution for "entities": "4.5.0" -> Update resolutions in extensions (capi, observability and harvester) + release docs update #13175
• Capi, Stackstate, and Harvester extensions are re-enabled in test-plugins-build.sh
• Affected extensions are passing tests