Hosted cluster provisioning page shows `registration` tab while updating / upgrading the cluster

[slickwarren]

Setup

• Rancher version: v2.7.2-rc7
• Browser type & version: any

Describe the bug

when upgrading a hosted cluster, the registration page will show on the provisioning tab

To Reproduce

• provision a hosted (say, GKE) cluster through rancher
• wait for the cluster to get to an active state
• upgrade the cluster
• go to the cluster's manage page (select the cluster from the list on the cluster management page)

Result a registration tab is shown by default

Expected Result

registration tab should not show for hosted clusters

Screenshots

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Edit: now, the ask is to: modify/expand on the existing warning on that page, You should not import a cluster which has already been connected to another instance of Rancher as it will lead to data corruption