add const constructors

app/lib/features/tor/presentation/controllers/start_tor_proxy.dart

@@ -40,7 +40,7 @@ class StartProxyController extends _$StartProxyController {
         final result = await showDialog<bool>(
           context: context,
           builder: (context) {
-            return TorDialog();
+            return const TorDialog();
           },
         );
 

app/lib/features/tor/presentation/controllers/start_tor_proxy.g.dart

@@ -42,7 +42,7 @@ final class StartProxyControllerProvider
 }
 
 String _$startProxyControllerHash() =>
-    r'a04e6cffc7483d48a0f2cbc320b0cc45c2e16674';
+    r'86a015a0c257ea18ad23aa28bdd43d289b6bfc64';
 
 abstract class _$StartProxyController extends $Notifier<void> {
   void build();

app/lib/features/tor/presentation/widgets/tor_dialog.dart

@@ -23,6 +23,8 @@ import 'package:weblibre/core/design/app_colors.dart';
 import 'package:weblibre/presentation/icons/tor_icons.dart';
 
 class TorDialog extends StatelessWidget {
+  const TorDialog();
+
   @override
   Widget build(BuildContext context) {
     return AlertDialog(