Fix 44557: Remove <a> empty anchor from message box to improve accessibility

[GitHamo]

This PR addresses the accessibility issue 44557 where a non-functional link in message boxes could confuse screen reader users.

~Replaces the outdated <a> name anchor with a modern <span> using an id and tabindex="-1".~

EDIT: Removes the <a> anchor from around the accessibility text in the message box.

https://mantis.ilias.de/view.php?id=44557

[GitHamo]

@klees should this PR be assigned to you as a reviewer?

[klees]

Hi @GitHamo,

we do not use GitHubs "reviewer" feature systematically. We use "assign", though =)

If you are not sure who to assign just leave it as is and some member of the @ILIAS-eLearning/technical-board will take care.

In this case the PR should go to @thibsy, @yvseiler and me, as we are the code authorities of the UI framework.

Kind regards!

[oliversamoila]

Hello @GitHamo. Thank you very much for your contribution and your PR. Please also provide PRs for releases 9, 11 and the trunk. Many thanks for your support. Best regards, @oliversamoila

[Annett7811]

Hello @GitHamo!

Thank you very much for your work and for removing the empty link. Unfortunately, no error message is now displayed when letters are entered here instead of a number (as intended by the question type). Could you take another look at this?

Best regards, Annett