Temporary pvc created by get-openstack-image not cleaned after successful deployment
### Summary
A temporary pvc (24Gi) created by get-openstack-image remains after successful deployment (it should be cleaned). Multiple deployments lead to multiple 24 Gi detached volumes (waste of storage capacity).
#### related references
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### Details
```shel
openstack volume show pvc-32f4fb83-51e1-4fbe-b90d-981d3865cc31
+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| attachments | [] |
| availability_zone | nova |
| bootable | false |
| consistencygroup_id | None |
| created_at | 2025-03-13T13:19:17.000000 |
| description | Created by OpenStack Cinder CSI driver |
| encrypted | False |
| id | 50eb3a8e-ffcb-4a65-9be6-fb9a1c11c678 |
| multiattach | False |
| name | pvc-32f4fb83-51e1-4fbe-b90d-981d3865cc31 |
| os-vol-tenant-attr:tenant_id | d19fd861661e4829ae7cbd808fbe294c |
| properties | cinder.csi.openstack.org/cluster='sylva-gurvan.moal', csi.storage.k8s.io/pv/name='pvc-32f4fb83-51e1-4fbe-b90d-981d3865cc31', csi.storage.k8s.io/pvc/name='get-openstack- |
| | images-fvvqb-tmp-storage', csi.storage.k8s.io/pvc/namespace='rocket-130' |
| replication_status | None |
| size | 24 |
| snapshot_id | None |
| source_volid | None |
| status | available |
| type | ceph_backend_ssd |
| updated_at | 2025-03-13T13:19:45.000000 |
| user_id | fe9c24c75472466b8a84de591a647bd8 |
+------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
```
issue