Disable NetworkManager.

Index: gnome-initial-setup/pages/meson.build
--- gnome-initial-setup/pages/meson.build.orig	2025-03-14 10:45:52 UTC
+++ gnome-initial-setup/pages/meson.build
@@ -2,7 +2,6 @@ pages = [
    'account',
    'language',
    'keyboard',
-   'network',
    'timezone',
    'privacy',
    'password',