Map identity public metadata to id_token in AX consent

[Benehiko]

Preflight checklist

• [X] I could not find a solution in the existing issues, docs, nor discussions.
• [X] I agree to follow this project's Code of Conduct.
• [X] I have read and am following this repository's Contribution Guidelines.
• [X] This issue affects my Ory Network project.
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Describe your problem

The Ory Account Experience does not map any Identity public metadata to the id_token. It only maps the Identity traits. As a user I want to specify data inside he public metadata and have it populate based on the scopes provided.

Describe your ideal solution

Map the public metadata to the id_token when the scope contains the key.

Workarounds or alternatives

A custom consent UI can also be implemented, but this requires a lot of work for only a couple more fields in the id_token!

Version

latest

Additional Context

No response

[aeneasr]

I believe we have an item on the backlog to allow customizing the session data using a JsonNet which receives the request context + identity information, which would solve this issue too. It's however currently not on the roadmap iirc.