Remove nullable from MaxActiveSessions

Jellyfin.Data/Entities/User.cs

@@ -191,7 +191,7 @@ namespace Jellyfin.Data.Entities
         /// <summary>
         /// Gets or sets the maximum number of active sessions the user can have at once.
         /// </summary>
-        public int? MaxActiveSessions { get; set; }
+        public int MaxActiveSessions { get; set; }
 
         /// <summary>
         /// Gets or sets the subtitle mode.