Prevent network failure when starting VM that no longer has NIC PCIE passthru, dummy proof feature

List of events that creates network failure/lockout:

1. Bind network card to VFIO at boot for VM

2. Later decide to use the NIC as UNRAID's main network interface after using in VM

3. Unbind the NIC from VFIO, configure UNRAID to use NIC in Network Settings.  No problems, yet.

This is where problems start:

4. Forget to edit the VM and neglect to uncheck pass thru option on VM template

5. Start the VM

Results:

6. UNRAID unassigned network settings in a failed attempt at using network card for the VM and became totally unreachable from network, requiring reboot at console.  Someone with greater experience might be able to run some commands at console instead of reboot, but those people probably wouldn't put themselves in this position 🤣

Clearly I'm a bonehead for forgetting to edit VM before starting, but it would be nice if UNRAID either didn't allow the VM to start or be proactive in unchecking pass thru options for something that couldn't be passed thru.  Can be replicated by following steps above.