Description of problem:

After setting AWS EFS ClusterCSIDriver to `managementState: Unmanaged`, the operator still re-creates the driver's CredentialsRequest.

Version-Release number of selected component (if applicable):

4.20.0-0.nightly-2025-06-28-115226

How reproducible: always

Steps to Reproduce:

1. Install AWS EFS CSI driver operator via OLM
2. Create its ClusterCSIDriver
3. Watch the driver is installed
4. Set the ClusterCSIDriver managementState: Unmanaged
5. Delete the CredentialsRequest

Actual results:

The CredentialsRequest is re-created

Expected results:

CredentialsRequest is still deleted.