Merge branch 'upgrade-v12' into 'main'

Classes/Backend/ItemsProcFuncs/IconMapper.php

Classes/Domain/Model/FrontendUser.php

Classes/Domain/Repository/FrontendUserRepository.php

Configuration/Extbase/Persistence/Classes.php

Configuration/Icons.php

Configuration/PageTS/Sitepackage.tsconfig

Configuration/PageTS/mod/WebLayout/BackendLayouts.tsconfig

...uration/TypoScript/Includes/DataProcessingMenu.typoscript

Configuration/TypoScript/Includes/IncludeAssets.typoscript

Resources/Private/Layouts/News/Container.html

Resources/Private/Layouts/News/Detail.html

Resources/Private/Layouts/News/General.html

Resources/Private/Preview/JumpLinkBox.html

Resources/Private/Preview/TeaserBox.html

Resources/Private/Preview/TextMedia.html

composer.json

ext_emconf.php

ext_localconf.php