Add support for deprecated values in field select options

(cherry picked from commit d9786887f3fe30ef60ad9c50b3272bf60dfef309)

Closes #2718

src/Readarr.Http/ClientSchema/SchemaBuilder.cs

@@ -107,7 +107,7 @@ namespace Readarr.Http.ClientSchema
                         Placeholder = fieldAttribute.Placeholder
                     };
 
-                    if (fieldAttribute.Type == FieldType.Select || fieldAttribute.Type == FieldType.TagSelect)
+                    if (fieldAttribute.Type is FieldType.Select or FieldType.TagSelect)
                     {
                         if (fieldAttribute.SelectOptionsProviderAction.IsNotNullOrWhiteSpace())
                         {
@@ -154,11 +154,17 @@ namespace Readarr.Http.ClientSchema
 
         private static List<SelectOption> GetSelectOptions(Type selectOptions)
         {
-            var options = selectOptions.GetFields().Where(v => v.IsStatic).Select(v =>
+            if (selectOptions.IsEnum)
+            {
+                var options = selectOptions
+                    .GetFields()
+                    .Where(v => v.IsStatic && !v.GetCustomAttributes(false).OfType<ObsoleteAttribute>().Any())
+                    .Select(v =>
                     {
                         var name = v.Name.Replace('_', ' ');
                         var value = Convert.ToInt32(v.GetRawConstantValue());
                         var attrib = v.GetCustomAttribute<FieldOptionAttribute>();
+
                         if (attrib != null)
                         {
                             return new SelectOption
@@ -169,20 +175,21 @@ namespace Readarr.Http.ClientSchema
                                 Hint = attrib.Hint ?? $"({value})"
                             };
                         }
-                else
-                {
+
                         return new SelectOption
                         {
                             Value = value,
                             Name = name,
                             Order = value
                         };
-                }
                     });
 
                 return options.OrderBy(o => o.Order).ToList();
             }
 
+            throw new NotSupportedException();
+        }
+
         private static Func<object, object> GetValueConverter(Type propertyType)
         {
             if (propertyType == typeof(int))