Fix sorting queue items by size

src/Radarr.Api.V3/Queue/QueueController.cs

@@ -223,6 +223,8 @@ namespace Radarr.Api.V3.Queue
                     return q => q.Languages;
                 case "quality":
                     return q => q.Quality;
+                case "size":
+                    return q => q.Size;
                 case "progress":
                     // Avoid exploding if a download's size is 0
                     return q => 100 - (q.Sizeleft / Math.Max(q.Size * 100, 1));