Displaying [object Object] as a string instead of nothing when a field is empty.

[PercheEtienne]

Hi all,

I just encountered a bug where the "[object Object]" is displayed as a string for the AI Tool Used section.

I analyzed both these manifests and the library -> https://github.com/contentauth/c2pa-js/blob/main/packages/c2pa/src/selectors/selectGenerativeInfo.ts#L143-L156

in both my images, there is no 'softwareAgent' inside the c2pa.created action. So I assume that as this field seems not mandatory, it should not display anything for the AI Tool Used Section?

Thanks,
Etienne.