feat(order): refactor order data mapping for improved clarity and structure

- Updated GetAllDiscountOrdersQueryHandler to enhance order data mapping by using a more structured approach with AdminOrderDto.
- Refactored user full name construction in GetCustomerOrderQueryHandler and GetCustomerOrdersQueryHandler to utilize UserDisplayName for better readability.
- Added necessary using directives for consistency across query handlers.

src/CMSMicroservice.Application/DiscountShopCQ/Queries/GetAllDiscountOrders/GetAllDiscountOrdersQueryHandler.cs

@@ -1,3 +1,4 @@
+using CMSMicroservice.Application.Common;
 using CMSMicroservice.Application.Common.Interfaces;
 using CMSMicroservice.Application.Common.Models;
 using MediatR;
@@ -80,35 +81,58 @@ public class GetAllDiscountOrdersQueryHandler : IRequestHandler<GetAllDiscountOr
         // Apply pagination
         var pagination = request.PaginationQuery ?? new PaginationState { PageNumber = 1, PageSize = 20 };
 
-        var orders = await query
+        var rows = await query
             .OrderByDescending(o => o.Created)
             .Skip((pagination.PageNumber - 1) * pagination.PageSize)
             .Take(pagination.PageSize)
-            .Select(o => new AdminOrderDto
+            .Select(o => new
             {
-                Id = o.Id,
-                UserId = o.UserId,
-                UserFullName = (o.User.FirstName ?? "") + " " + (o.User.LastName ?? ""),
-                UserMobile = o.User.Mobile,
-                TotalAmount = o.TotalAmount,
-                DiscountBalanceUsed = o.DiscountBalanceUsed,
-                GatewayAmountPaid = o.GatewayAmountPaid,
-                VatAmount = o.VatAmount,
-                PaymentStatus = o.PaymentStatus,
-                PaymentDate = o.PaymentDate,
-                DeliveryStatus = o.DeliveryStatus,
-                DeliveryDate = null, // TODO: Add DeliveryDate to DiscountOrder if needed
+                o.Id,
+                o.UserId,
+                FirstName = o.User.FirstName,
+                LastName = o.User.LastName,
+                Mobile = o.User.Mobile,
+                o.TotalAmount,
+                o.DiscountBalanceUsed,
+                o.GatewayAmountPaid,
+                o.VatAmount,
+                o.PaymentStatus,
+                o.PaymentDate,
+                o.DeliveryStatus,
                 ShippingAddress = o.UserAddress.Address,
                 ReceiverName = o.UserAddress.Title,
-                ReceiverMobile = o.User.Mobile,
-                TrackingCode = o.TrackingCode,
+                o.TrackingCode,
                 AdminNote = o.DeliveryDescription,
-                Created = o.Created,
-                LastModified = o.LastModified,
+                o.Created,
+                o.LastModified,
                 ItemsCount = o.OrderDetails.Count
             })
             .ToListAsync(cancellationToken);
 
+        var orders = rows.Select(o => new AdminOrderDto
+        {
+            Id = o.Id,
+            UserId = o.UserId,
+            UserFullName = UserDisplayName.From(o.FirstName, o.LastName, o.Mobile, o.UserId),
+            UserMobile = o.Mobile,
+            TotalAmount = o.TotalAmount,
+            DiscountBalanceUsed = o.DiscountBalanceUsed,
+            GatewayAmountPaid = o.GatewayAmountPaid,
+            VatAmount = o.VatAmount,
+            PaymentStatus = o.PaymentStatus,
+            PaymentDate = o.PaymentDate,
+            DeliveryStatus = o.DeliveryStatus,
+            DeliveryDate = null,
+            ShippingAddress = o.ShippingAddress,
+            ReceiverName = o.ReceiverName,
+            ReceiverMobile = o.Mobile,
+            TrackingCode = o.TrackingCode,
+            AdminNote = o.AdminNote,
+            Created = o.Created,
+            LastModified = o.LastModified,
+            ItemsCount = o.ItemsCount
+        }).ToList();
+
         return new GetAllDiscountOrdersResponseDto
         {
             MetaData = new MetaData