Hide empty data fields on work page
This merge request hides any work page data fields that have no value.
Previously, pages with incomplete data displayed labels like “Publication date: Unknown” or “Language: Unknown”, which cluttered the layout.
Before:

Changes I made
Updated the work page template to conditionally render fields only when data is available.
Improved readability and aesthetics for works with limited metadata.
Ensured consistent spacing when fields are hidden.
Benefits
This change gives the work page a more elegant and polished appearance, especially when little or no data is available for a given work. It improves the user experience and helps maintain a clean visual hierarchy across all work pages.
After:
