Support schemas inside of `additionalProperties` about json-schema-viewer

[siimsoni]

additionalProperties is part of JSON Schema Draft 4, and a quite important part of it, as it's needed to represent value maps.
https://datatracker.ietf.org/doc/html/draft-fge-json-schema-validation-00#section-5.4.4
It is quite surprising that this is not supported, considering the project claims full JSON Schema Draft 4 support.

[philsturgeon]

This is effecting the elements v7 and is not handled in json-schema-viewer v4.

[Airkro]

Maybe the viewer's internal logic could turn additionalProperties into properties/{*} to support this.

[philsturgeon]

This could be considered "OpenAPI v3.1 Compatibility" work, as this was not supported in prior versions and is now.

http://json-schema.org/understanding-json-schema/reference/object.html#additional-properties

[onavratil-monetplus]

This bug is a major inconvenience

[danielgtaylor]

Any update on this? It's hard to recommend Elements be used when a fairly basic feature is missing. This makes it so maps are just documented as object which isn't very useful, particularly when the map value is a complex type.