OpenStackControlPlane CR creation stuck with services showing "Admin client error occured Authentication failed"

Issue

OpenStackControlPlane CR creation stuck with services showing "in progress" status:

...
   status:
    conditions:
    - lastTransitionTime: "2025-04-22T20:20:01Z"
      message: OpenStackControlPlane Telemetry in progress
      reason: Requested
      severity: Info
      status: "False"
      type: Ready
...

The services show "Admin client error occured Authentication failed" errors, for instance:

$ oc get swifts -o yaml
apiVersion: swift.openstack.org/v1beta1
kind: Swift
...
status:
  conditions:
  - lastTransitionTime: "2025-04-21T23:31:02Z"
    message: Admin client error occured Authentication failed
    reason: Error
    severity: Warning
    status: "False"
    type: Ready
...