fix(authors): don't wrap author names in empty-href anchors

[Vidminas]

Hi! I've been using HugoBlox (initially Wowchemy) for my personal site for a while. I finally got round to migrating from the old Bootstrap styles to the new Hugo Blox Kit with Tailwind. During the migration, I encountered quite many bugs. Claude makes it fairly easy to go back over git history and pull out generic bug fixes, so this is the first of a bunch of PRs with things I fixed for my site during migration.

🚀 What type of change is this?

• 🐛 Bug fix (A non-breaking change that fixes an issue)
• ✨ New feature (A non-breaking change that adds functionality)
• 💅 Style change (A change that only affects formatting, visuals, or styling)
• 📚 Documentation update (Changes to documentation only)
• 🧹 Refactor or chore (A code change that neither fixes a bug nor adds a feature)
• 💥 Breaking change (A fix or feature that would cause existing functionality to not work as expected)

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🎯 What is the purpose of this change?

In citation/publication author lists, every author name is wrapped in <a href="">, which
browsers resolve to the current page — so each author looks like a self-link.

Root cause. page_metadata_authors.html links whenever the author's term-page object
exists ({{ if $termPage }}). But author profile pages ship with build.render: never by
default, so site.GetPage still returns a (truthy) page whose RelPermalink is empty →
href="". On Hugo versions that keep a permalink for render-suppressed pages it would instead
link to an unbuilt 404 — broken either way.

Fix. Guard the anchor on a non-empty permalink
({{ if and $termPage $termPage.RelPermalink }}); otherwise render the name as plain text (the
existing else branch). A comment explains why.

Verified on the academic-cv starter: href="" occurrences in the built output drop from 3
pages → 0, and author names render as plain text where their profile pages are unpublished.

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📸 Screenshots or Screencast (if applicable)

n/a — the visible DOM change is <a href="">Jane Doe</a> → Jane Doe.

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ℹ️ Documentation Check

• No, this change does not require a documentation update.
• Yes, I have updated the documentation accordingly (or will in a follow-up PR).

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📜 Contributor Agreement

Thank you for your contribution!

• By checking this box, I confirm that I have read and agree to the HugoBlox Contributor License Agreement (CLA).

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[github-actions]

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Awesome work, we'll take a look soon! ✨