Hi,
that was due to Windows Insider Program removal, on newer Win11 there is a bug that Insider settings page hiding hides WU as well.
Did you really only use latest NTLite to make that install? It should not happen.
In the meantime manually edit:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
SettingsPageVisibility
cut-out only the text:
;windowsinsider-optin
If in doubt, backup the key first (right-click on Explorer and Export as REG).