Important: #105538 - Plugin subtypes removed: Changes to configurePlugin() and TCA handling 

See forge#105538

Description 

Due to the removal of the plugin content element "Plugin" (list) and the corresponding plugin subtype field list_type, the fifth parameter $pluginType of ExtensionUtility::configurePlugin() is now unused and can be omitted. It is only kept for backwards compatibility.

Be aware that passing any value other than CType will trigger an \InvalidArgumentException.

Please also note that due to the removal of the list_type field in tt_content, passing list_type as the second parameter $field to ExtensionManagementUtility::addTcaSelectItemGroup() will now, as for any other non-existent field, trigger a \RuntimeException.