Deprecation: #110479 - ActionMenuItemGroup defaultController argument 

See forge#110479

Description 

The unused defaultController argument of the <f:be.menus.actionMenuItemGroup> ViewHelper has been deprecated and will be removed in TYPO3 v16.0.

Impact 

Using the defaultController argument triggers a PHP E_USER_DEPRECATED error.

Affected installations 

TYPO3 installations with Fluid templates that pass the defaultController argument to <f:be.menus.actionMenuItemGroup> are affected.

Migration 

Remove the unused defaultController argument from the ViewHelper call.