fix(Tooltip): aria-describedby and aria-labelledby

[Barsnes]

Summary

Checks

• I have read the contribution guidelines
• I have added a changeset (run pnpm changeset if relevant)

[changeset-bot]

🦋 Changeset detected

Latest commit: c3fa3ba

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
@digdir/designsystemet-react	Patch
@digdir/designsystemet	Patch
@digdir/designsystemet-css	Patch
@digdir/designsystemet-theme	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

Preview deployments for this pull request:

storybook - 4. Nov 2025 - 09:31

[oddvernes]

• Should we have aria-hidden on the tooltip like primer (if we can find out why exactly)
• should we do as mattilsynet and automatically use aria-labelledby if there is no text in the wrapped element and aria-describedy if there is text
• is role=tooltip needed or not, looks like mattilsynet does not have it and @eirikbacker mentioned it is poorly supported

[Barsnes]

• Should we have aria-hidden on the tooltip like primer (if we can find out why exactly)
• should we do as mattilsynet and automatically use aria-labelledby if there is no text in the wrapped element and aria-describedy if there is text
• is role=tooltip needed or not, looks like mattilsynet does not have it and @eirikbacker mentioned it is poorly supported

We have role="tooltip" since it is mentioned here https://www.w3.org/WAI/ARIA/apg/patterns/tooltip/#:~:text=or%20the%20tooltip.-,WAI%2DARIA%20Roles%2C%20States%2C%20and%20Properties,-The%20element%20that
We don't have aria-describedby, so we should at least have that

[eirikbacker]

Bare forslag til tweaks på struktur, og en 'id' som nok ikke skulle være en fast string :)

[oddvernes]

LGTM!