Fix/in browser postman auth & editor config boolean serialization (#14739)

* Add in-browser postman callback url

* Added a jsonconverter for property editor configuration boolean values that are persisted as numbers and serialized as strings...

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Co-authored-by: Sven Geusens <sge@umbraco.dk>

src/Umbraco.Infrastructure/Serialization/SystemTextConfigurationEditorJsonSerializer.cs

@@ -27,6 +27,7 @@ public class SystemTextConfigurationEditorJsonSerializer : IConfigurationEditorJ
         _jsonSerializerOptions.Converters.Add(new JsonObjectConverter());
         _jsonSerializerOptions.Converters.Add(new JsonUdiConverter());
         _jsonSerializerOptions.Converters.Add(new JsonGuidUdiConverter());
+        _jsonSerializerOptions.Converters.Add(new JsonBoolConverter());
     }
 
     public string Serialize(object? input) => JsonSerializer.Serialize(input, _jsonSerializerOptions);