Fix empty related media header

[0kyn]

Fixes

Fixes #1719 by @krysal

Description

This PR add a check to show "Related images" section only if there are media fetched

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main) or a parent feature branch.
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no visible errors.

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[obulat]

Thank you for fixing this issue, @0kyn :)

[krysal]

Great 💯 Thank you, @0kyn!