update products

lib/features/products/data/models/product_model.dart

@@ -86,12 +86,12 @@ class ProductModel extends HiveObject {
     return ProductModel(
       id: json['id'] as String,
       name: json['name'] as String,
-      description: json['description'] as String,
+      description: json['description'] as String? ?? '',
       price: (json['price'] as num).toDouble(),
       imageUrl: json['imageUrl'] as String?,
       categoryId: json['categoryId'] as String,
-      stockQuantity: json['stockQuantity'] as int,
-      isAvailable: json['isAvailable'] as bool,
+      stockQuantity: json['stockQuantity'] as int? ?? 0,
+      isAvailable: json['isAvailable'] as bool? ?? true,
       createdAt: DateTime.parse(json['createdAt'] as String),
       updatedAt: DateTime.parse(json['updatedAt'] as String),
     );