util/grub.d/30_os-prober.in: Manage Windows 8 to 19, Server 2012 and later
Windows Vista, Seven and Server 2008 chainloader menu entries do not need drivemap, so later versions should not need it either.
This MR depends on os-prober pending MR installer-team/os-prober!21 to identify Windows Server 2012 to 2022.