We do not want dom0 telling Qubes-Whonix VMs the time. Because in case of a compromised Whonix VM, we do not want the adversary replace/restore the `/etc/qubes-rpc/qubes.SetDateTime` script. To avoid [time related](https://www.whonix.org/wiki/Dev/TimeSync) deanoymization. We need to stop dom0's `/usr/bin/qvm-sync-clock` from running that hook for Qubes-Whonix VMs.
In T384#6287 @marmarek said we should use the mgmt stack for that.
mgmt should keep configuring qvm-sync-clock disabled for Qubes-Whonix VMs. For dreshly downloaded templates as well as for user custom created new Whonix VMs based on Qubes-Whonix templates.