CRD blocking pods and namespaces to be deleted

Customer was deploying an application with helm but noticed strange behavior, pods were not deleted when running helm delete. 
Also when trying to delete a namespace it was on `Terminating` status.

The following entry was found in api-server logs:

~~~
E0503 05:31:28.815925      19 crd_finalizer.go:299] inferenceservices.serving.kserve.io failed with: unable to find a custom resource client for inferenceservices.serving.kserve.io: unable to load root certificates: unable to parse bytes as PEM block
~~~

After deleting `inferenceservices.serving.kserve.io` CRD everything worked as expected.

This issue has been created in order to understand why a hung CRD affect to delete operations in other namespaces.

4.9.47

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