[dev] PHP 8.4: Fixing "implicitly nullable parameter declaration" issues in

Dear Developers,

We would like to inform you that we plan to merge PR #8957 [1] next week. This pull request addresses the PHP 8.4 "Implicitly nullable parameter declaration" issues across the codebase.

If you prefer to apply the necessary adjustments to your own components yourself, please do so immediately. Otherwise, we will proceed with merging the PR to ensure a consistent resolution across all affected areas.

Best regards, Michael Jansen

On behalf of ILIAS e.V. and the Technical Board

[1] https://github.com/ILIAS-eLearning/ILIAS/pull/8957