AKS - can't update some input fields if the save request fails

[mantis-toboggan-md]

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Describe the bug

To Reproduce

1. Attempt to provision an AKS cluster with a configuration that will fail (eg, try to re-use the name of an existing cluster)
2. After hitting save, attempt to change the cluster name. Result The cluster name input can't be edited: the input is immediately re-populated with the old value. The same appears to be true of the description and cluster resource group inputs. The node inputs also become disabled.

Expected Result When creating a new AKS cluster, if the save action fails, the entire form should be editable.

Screenshots (in this video, I am mashing backspace)

https://github.com/rancher/dashboard/assets/42977925/00029ef1-f8b0-4427-83c0-2cbc5e85c8b0

Additional context