IPI installation failed against 4.11 nightly build on Azure Stack Hub WWT.

workers machines failed to be provisioned as using the wrong image which does not exist.
$ oc get machine -n openshift-machine-api
NAME                                  PHASE     TYPE              REGION   ZONE   AGE
jima411az-xvwvg-master-0              Running   Standard_DS4_v2   mtcazs          3h10m
jima411az-xvwvg-master-1              Running   Standard_DS4_v2   mtcazs          3h10m
jima411az-xvwvg-master-2              Running   Standard_DS4_v2   mtcazs          3h10m
jima411az-xvwvg-worker-mtcazs-4k6hs   Failed                                      3h3m
jima411az-xvwvg-worker-mtcazs-fc6s5   Failed                                      3h3m
jima411az-xvwvg-worker-mtcazs-sclgf   Failed                                      3h3m

$ oc describe machine jima411az-xvwvg-worker-mtcazs-4k6hs -n openshift-machine-api
...
Events:
  Type     Reason        Age   From              Message
  ----     ------        ----  ----              -------
  Warning  FailedCreate  3h4m  azure-controller  InvalidConfiguration: failed to reconcile machine "jima411az-xvwvg-worker-mtcazs-4k6hs": failed to create vm jima411az-xvwvg-worker-mtcazs-4k6hs: failure sending request for machine jima411az-xvwvg-worker-mtcazs-4k6hs: cannot create vm: compute.VirtualMachinesClient#CreateOrUpdate: Failure sending request: StatusCode=404 -- Original Error: Code="NotFound" Message="The Image '/subscriptions/de7e09c3-b59a-4c7d-9c77-439c11b92879/resourceGroups/jima411az-xvwvg-rg/providers/Microsoft.Compute/images/jima411az-xvwvg-gen2' cannot be found in 'mtcazs' region."

The image created on ASH is `/subscriptions/de7e09c3-b59a-4c7d-9c77-439c11b92879/resourceGroups/jima411az-xvwvg-rg/providers/Microsoft.Compute/images/jima411az-xvwvg`

# az resource list -g jima411az-xvwvg-rg --query "[?type=='Microsoft.Compute/images']"
[
  {
    "changedTime": "2023-08-03T01:08:03.369233+00:00",
    "createdTime": "2023-08-03T00:57:34.228352+00:00",
    "id": "/subscriptions/de7e09c3-b59a-4c7d-9c77-439c11b92879/resourceGroups/jima411az-xvwvg-rg/providers/Microsoft.Compute/images/jima411az-xvwvg",
    "identity": null,
    "kind": null,
    "location": "mtcazs",
    "managedBy": null,
    "name": "jima411az-xvwvg",
    "plan": null,
    "properties": null,
    "provisioningState": "Succeeded",
    "resourceGroup": "jima411az-xvwvg-rg",
    "sku": null,
    "tags": {},
    "type": "Microsoft.Compute/images"
  }
]

4.11.0-0.nightly-2023-07-29-013834

Always on 4.11

1. Deploy IPI with 4.11 on ASH WWT
2. 
3.

worker nodes failed to be provisioned

Installation is successful. 

Detect issue on 4.11, IPI installation works well on 4.12+.