[!!!][TASK] Remove deprecated code ContextualFeedbackSeverity

Removed the following public method:
* \TYPO3\CMS\Core\Type\ContextualFeedbackSeverity::transform

Removed the following public constants:
* \TYPO3\CMS\Core\Messaging\AbstractMessage::ERROR
* \TYPO3\CMS\Core\Messaging\AbstractMessage::INFO
* \TYPO3\CMS\Core\Messaging\AbstractMessage::NOTICE
* \TYPO3\CMS\Core\Messaging\AbstractMessage::OK
* \TYPO3\CMS\Core\Messaging\AbstractMessage::WARNING
* \TYPO3\CMS\Core\Messaging\FlashMessage::ERROR
* \TYPO3\CMS\Core\Messaging\FlashMessage::INFO
* \TYPO3\CMS\Core\Messaging\FlashMessage::NOTICE
* \TYPO3\CMS\Core\Messaging\FlashMessage::OK
* \TYPO3\CMS\Core\Messaging\FlashMessage::WARNING
* \TYPO3\CMS\Reports\Status::ERROR
* \TYPO3\CMS\Reports\Status::INFO
* \TYPO3\CMS\Reports\Status::NOTICE
* \TYPO3\CMS\Reports\Status::OK
* \TYPO3\CMS\Reports\Status::WARNING

Resolves: #101043
Related: #100963
Related: #97787
Releases: main
Change-Id: Ieefeec3da44b09fe2ee5446f8f5ac38c6161e7ca
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/79327


Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>