From the CIS Windows Server Benchmark:
"Note: This section was initially named Defer Windows Updates but was renamed by Microsoft to Windows Update for Business starting with the Microsoft Windows 10 Release
1709 Administrative Templates. It was renamed (again) to Manage updates offered from Windows Update starting with the Microsoft Windows 11 Release 21H2 Administrative
Templates."
Probably an existing setting/branch that was renamed.
Try downloading the latest Group Policy Administrative Templates current for Windows 11. Update the templates on the host that you are running GPMC on. By default Windows uses admx templates from the local machine. If you are using the Group Policy Central Store, you should update that location.
Using updated templates should display the settings correctly.
Administrative Templates (.admx) for Windows 11 2022 Update (22H2)
https://www.microsoft.com/en-us/download/details.aspx?id=104593