fix: navigation is more consistant

lib/views/product_form_view.dart

@@ -1,7 +1,6 @@
 import 'dart:io';
 
 import 'package:flutter/material.dart';
-import 'package:go_router/go_router.dart';
 import 'package:image_picker/image_picker.dart';
 import 'package:path/path.dart' as path;
 import 'package:path_provider/path_provider.dart';
@@ -12,6 +11,7 @@ import '../models/product.dart';
 import '../viewmodels/product_list_view_model.dart';
 import '../l10n/app_localizations.dart';
 import '../l10n/app_localizations_helpers.dart';
+import '../utils/navigation.dart';
 
 class ProductFormView extends StatefulWidget {
   final String? productId;
@@ -70,7 +70,7 @@ class _ProductFormViewState extends State<ProductFormView> {
           context,
         ).showSnackBar(SnackBar(content: Text(l10n.productNotFound)));
 
-        context.go('/products');
+        _leaveProductForm();
         return;
       }
 
@@ -90,10 +90,14 @@ class _ProductFormViewState extends State<ProductFormView> {
       ScaffoldMessenger.of(
         context,
       ).showSnackBar(SnackBar(content: Text(l10n.couldNotLoadProduct)));
-      context.go('/products');
+      _leaveProductForm();
     }
   }
 
+  void _leaveProductForm() {
+    context.popOrGo('/products');
+  }
+
   @override
   void dispose() {
     _nameController.dispose();
@@ -214,7 +218,7 @@ class _ProductFormViewState extends State<ProductFormView> {
     if (!mounted) return;
 
     setState(() => _isSaving = false);
-    context.go('/products');
+    _leaveProductForm();
   }
 
   Future<void> _delete() async {
@@ -241,7 +245,7 @@ class _ProductFormViewState extends State<ProductFormView> {
       },
     );
 
-    if (confirmed != true) return;
+    if (confirmed != true || !mounted) return;
 
     final viewModel = context.read<ProductListViewModel>();
 
@@ -258,7 +262,7 @@ class _ProductFormViewState extends State<ProductFormView> {
 
     if (!mounted) return;
 
-    context.go('/products');
+    _leaveProductForm();
   }
 
   Widget _buildImagePicker(BuildContext context) {
@@ -328,7 +332,7 @@ class _ProductFormViewState extends State<ProductFormView> {
         title: Text(title),
         leading: IconButton(
           icon: const Icon(Icons.arrow_back),
-          onPressed: () => context.go('/products'),
+          onPressed: _leaveProductForm,
         ),
         actions: [
           if (widget.isEditing)