refactor shipping attachments and changed shipment to shipping for coherence

lib/features/tickets/models/ticket_model.dart

@@ -1,7 +1,7 @@
 import 'package:equatable/equatable.dart';
 import 'package:flux/core/utils/extensions.dart';
 import 'package:flux/features/customers/models/customer_model.dart';
-import 'package:flux/features/tickets/models/shipment_document_model.dart';
+import 'package:flux/features/tickets/models/shipping_document_model.dart';
 
 /// Enum per il tipo di ticket
 enum TicketType {
@@ -121,8 +121,7 @@ class TicketModel extends Equatable {
   final String? assignedToId;
   final String? assignedToName;
   final String? includedAccessories;
-  final ShipmentDocumentModel?
-  shippingDocument; // Per tenere in memoria i dati del DDT associato al ticket
+  final ShippingDocumentModel? shippingDocument;
 
   const TicketModel({
     this.id,
@@ -215,7 +214,7 @@ class TicketModel extends Equatable {
     String? assignedToId,
     String? assignedToName,
     String? includedAccessories,
-    ShipmentDocumentModel? shippingDocument,
+    ShippingDocumentModel? shippingDocument,
   }) {
     return TicketModel(
       id: id ?? this.id,
@@ -312,7 +311,7 @@ class TicketModel extends Equatable {
       assignedToName: (map['assigned_to']?['name'] as String?)?.myFormat(),
       includedAccessories: map['included_accessories'] as String?,
       shippingDocument: map['shipping_document'] != null
-          ? ShipmentDocumentModel.fromMap(
+          ? ShippingDocumentModel.fromMap(
               map['shipping_document'] as Map<String, dynamic>,
             )
           : null,