IPv6 Is not properly supported in site24x7_website_monitor

[stevef-5gn-com-au]

When creating web monitors for IPv6 addresses, it seems the "use_ipv6" is being completely ignored, and terraform wants to apply this every time. More over, if I manually change the monitor to "prefer ipv6" in the UI configuration of the monitor and run terraform again, the setting reverts to "prefer ipv4" even when "use_ipv6" is set to true.