Bug: details node is not beeing fetched properly

[HolgerAusB]

Given a html code from the sourse article like

<details>
   <summary>
      short description
   </summary>
   <p>
      Hidden long text, that will be shown after clicking the arrow in front of the summary text part
   </p>
</details>

results in a graby/wallabag catch of

<details>
   <summary>
      short description
   </summary>
</details>

so the <details> text part is missing currently. But the original html construction should be preserved in any case.

This has been reported lately in:

• Wrong display in wallabag vivaldi.com/blog/ wallabag/wallabag#7869
• Wrong display in wallabag wallabag/wallabag#7792
• Wrong display in wallabag wallabag/wallabag#7867