Breaking: #93056 - Removed hooks when retrieving Backend user groups

See Issue #93056

Description

When the user groups of a backend user are loaded, two hooks (before and after fetching) were in place to modify the list of groups.

$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_userauthgroup.php']['fetchGroupQuery'] $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_userauthgroup.php']['fetchGroups_postProcessing']

This functionality is replaced by a new PHP GroupResolver class, the hooks have been removed, and a new Event has been added instead.

Impact

Using those hooks has no effect anymore, as the hooks are never called in TYPO3 v11.

Affected Installations

TYPO3 installations with custom extensions using these hooks, which is usually around enhancing the permission system or custom group resolving.

Migration

When user groups are loaded, for example when a backend editors’ groups and permissions are calculated, a new PSR-14 event AfterGroupsResolvedEvent is fired.

The hooks have been removed without deprecation in order to allow extensions to make their extension compatible with TYPO3 v10 (using the hooks), and TYPO3 v11 (use the PSR-14 instead).