add JsonIgnore in MessageCreateDto

Tsi1.Api/Tsi1.BusinessLayer/Dtos/MessageCreateDto.cs

 using System;
 using System.Collections.Generic;
 using System.Text;
+using System.Text.Json.Serialization;
 
 namespace Tsi1.BusinessLayer.Dtos
 {
     public class MessageCreateDto
     {
+        [JsonIgnore]
         public int SenderId { get; set; }
 
         public int ReceiverId { get; set; }