Ignore `Grabbed` with STJson

(cherry picked from commit cc5b5463f225604a29820e026a43d7dc33f0ffa5)

Closes #4824

src/Lidarr.Api.V1/Albums/AlbumResource.cs

@@ -1,9 +1,9 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json.Serialization;
 using Lidarr.Api.V1.Artist;
 using Lidarr.Http.REST;
-using Newtonsoft.Json;
 using NzbDrone.Core.MediaCover;
 using NzbDrone.Core.Music;
 using Swashbuckle.AspNetCore.Annotations;
@@ -49,7 +49,7 @@ namespace Lidarr.Api.V1.Albums
         public string RemoteCover { get; set; }
 
         // Hiding this so people don't think its usable (only used to set the initial state)
-        [JsonProperty(DefaultValueHandling = DefaultValueHandling.Ignore)]
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
         [SwaggerIgnore]
         public bool Grabbed { get; set; }
     }

src/Lidarr.Api.V1/Tracks/TrackResource.cs

@@ -1,9 +1,9 @@
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json.Serialization;
 using Lidarr.Api.V1.Artist;
 using Lidarr.Api.V1.TrackFiles;
 using Lidarr.Http.REST;
-using Newtonsoft.Json;
 using NzbDrone.Core.Music;
 using Swashbuckle.AspNetCore.Annotations;
 
@@ -29,7 +29,7 @@ namespace Lidarr.Api.V1.Tracks
         public Ratings Ratings { get; set; }
 
         // Hiding this so people don't think its usable (only used to set the initial state)
-        [JsonProperty(DefaultValueHandling = DefaultValueHandling.Ignore)]
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
         [SwaggerIgnore]
         public bool Grabbed { get; set; }
     }