Add preset for Greeter settings (refs: #17136)

config/chroot_local-includes/usr/src/persistence-setup/lib/Tails/Persistence/Configuration/Presets.pm

@@ -65,6 +65,21 @@ method _build__presets () {
                 },
             ]
         },
+        {
+            id          => 'GreeterSettings',
+            name        => $self->encoding->decode(gettext(q{Tails Greeter Settings})),
+            description => $self->encoding->decode(gettext(
+                q{Startup options configured in Tails Greeter}
+            )),
+            icon_name   => 'preferences-system',
+            enabled     => 0,
+            atoms_args  => [
+                {
+                    destination => '/var/lib/gdm3/settings',
+                    options     => [ 'source=greeter-settings' ],
+                },
+            ]
+        },
         {
             id          => 'BrowserBookmarks',
             name        => $self->encoding->decode(gettext(q{Browser Bookmarks})),