Fix header link sizes

[archiewood]

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• For UI or styling changes, I have added a screenshot or gif showing before & after
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🦋 Changeset detected

Latest commit: 779ba49

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

This PR includes changesets to release 5 packages

Name	Type
@evidence-dev/core-components	Patch
@evidence-dev/evidence	Patch
my-evidence-project	Patch
@evidence-dev/components	Patch
evidence-test-environment	Patch

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[archiewood]

Fixes #1896

A better solution might be to always inherit sizing for links

[mcrascal]

LGTM -- only thing is this edge cases table looks broken enough right now that it'll be hard to know if there's a regression.