Error in TS Node client

[GeorgDangl]

Serializing the ItemNumberSchemaDto toJSON()fails when thetiersitselfs are not instances of theItemNumberSchemaDto` classes but just other objects.

We've fixed that in other places, I guess this was a bit different here so we'll have to fix that as well😀

[GeorgDangl]

Also see client's email from 04.09.2024 to me.

[GeorgDangl]

Fixed in e6e5615, 06ed0ad and a96e799

I've provided a preview build to the client, waiting for confirmation now.