fix(nixpak): allow WebKit network portals for slicers

hardening/nixpaks/modules/portal-groups.nix

@@ -17,6 +17,10 @@ let
       "Notification.AddNotification"
       "Notification.RemoveNotification"
     ];
+    webkit = [
+      "NetworkMonitor.GetStatus"
+      "ProxyResolver.Lookup"
+    ];
     screenCast = [
       "ScreenCast.CreateSession"
       "ScreenCast.SelectSources"

hardening/nixpaks/modules/slicer-policy.nix

@@ -41,6 +41,7 @@ in
       openUri = true;
       notifications = true;
       inputMethod = true;
+      webkit = true;
     };
     desktopIntegration = {
       notifications = true;