Breaking: #72360 - Removed deprecated entry point fallback

See Issue #72360

Description

The entry point fallback mechanism introduced with #68812 has been removed.

The following entry points won't work anymore.

typo3/ajax.php
typo3/alt_clickmenu.php
typo3/alt_db_navframe.php
typo3/alt_doc.php
typo3/alt_file_navframe.php
typo3/browser.php
typo3/db_new.php
typo3/dummy.php
typo3/init.php
typo3/login_frameset.php
typo3/logout.php
typo3/mod.php
typo3/move_el.php
typo3/show_item.php
typo3/tce_db.php
typo3/tce_file.php
typo3/thumbs.php

Impact

All references / links to these entry points directly without using the proper API calls will result in a 404 error.

Affected Installations

Installations with third-party extensions that link directly to these files.

Migration

Move all existing code in extensions that link to the deprecated entry points to use methods like BackendUtility::getModuleUrl() and BackendUtility::getAjaxUrl() or the UriBuilder class.