fix: render head_html as safe HTML

[gajjug004]

Summary

Restore | safe filter on head_html in wiki layout. Without it Jinja autoescapes the snippet, so analytics <script> tags render as text and never execute
ref: be6d8fc

Summary by CodeRabbit

Bug Fixes

• Improved handling of page header content to ensure metadata and styles render correctly only when present, preventing potential layout issues and improving overall page performance. This fix enhances the reliability and stability of page rendering throughout the application and eliminates unnecessary rendering of empty header content elements.

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 345e7d28-df04-4cfc-9a8a-da0eaff1ed70

📥 Commits

Reviewing files that changed from the base of the PR and between b76af1e and 9effb69.

📒 Files selected for processing (1)

• wiki/templates/wiki/layout.html

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Walkthrough

This PR updates the layout.html template to conditionally render the head_html variable only when it is defined and truthy. The change adds a safe filter ({{ head_html | safe }}) to the rendering expression, which prevents Django from auto-escaping the HTML content. This replaces the previous behavior that always rendered head_html without the conditional guard or the safe filter.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: restoring the safe HTML filter for head_html rendering, which directly addresses the autoescaping issue preventing script execution.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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