feat(vd): remove finalizer from unmounted vd

[hardcoretime]

Description

vd-protection will be removed from the virtual disk if the virtual machine is stopped.

Why do we need it, and what problem does it solve?

This is necessary for the new feature, 'Restore Virtual Machine with Force Option.' Before restoring the virtual machine, it should be stopped to restore the virtual disk.

What is the expected result?

Checklist

• The code is covered by unit tests.
• e2e tests passed.
• Documentation updated according to the changes.
• Changes were tested in the Kubernetes cluster manually.

Changelog entries

section: vd
type: feature
summary: "Now the stopped virtual machine does not protect the virtual disk, and the virtual disk becomes available for deletion"
impact_level: low

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