reworked operation (#12)

Reviewed-on: #12
Co-authored-by: Mark M2 Macbook <marco@catelli.it>
Co-committed-by: Mark M2 Macbook <marco@catelli.it>

lib/core/widgets/qr_upload_dialog.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:flux/core/utils/extensions.dart';
 import 'package:qr_flutter/qr_flutter.dart';
 
 class QrUploadDialog extends StatelessWidget {
@@ -84,7 +85,7 @@ class QrUploadDialog extends StatelessWidget {
       actions: [
         TextButton(
           onPressed: () => Navigator.of(context).pop(),
-          child: const Text("CHIUDI"),
+          child: Text(context.l10n.commonClose),
         ),
       ],
       actionsAlignment: MainAxisAlignment.center,