Deprecation: #69561 - Replace sprite icons with IconFactory in ContextMenu

See Issue #69561

Description

The \TYPO3\CMS\Backend\ContextMenu\ContextMenuAction::$class member variable is not used anymore inside Core, therefore it has been marked as deprecated and will be removed with CMS 8.

Affected Installations

Any installation using third party code, which accesses ContextMenuAction::$class .

Migration

Remove any reference to ContextMenuAction::$class .