Use Guid for BaseItemPerson.Id

Emby.Server.Implementations/Dto/DtoService.cs

@@ -584,7 +584,7 @@ namespace Emby.Server.Implementations.Dto
                 if (dictionary.TryGetValue(person.Name, out Person entity))
                 {
                     baseItemPerson.PrimaryImageTag = GetTagAndFillBlurhash(dto, entity, ImageType.Primary);
-                    baseItemPerson.Id = entity.Id.ToString("N", CultureInfo.InvariantCulture);
+                    baseItemPerson.Id = entity.Id;
                     if (dto.ImageBlurHashes != null)
                     {
                         // Only add BlurHash for the person's image.

MediaBrowser.Model/Dto/BaseItemPerson.cs

@@ -1,4 +1,5 @@
 #nullable disable
+using System;
 using System.Collections.Generic;
 using System.Text.Json.Serialization;
 using MediaBrowser.Model.Entities;
@@ -20,7 +21,7 @@ namespace MediaBrowser.Model.Dto
         /// Gets or sets the identifier.
         /// </summary>
         /// <value>The identifier.</value>
-        public string Id { get; set; }
+        public Guid Id { get; set; }
 
         /// <summary>
         /// Gets or sets the role.