FIX: Find CompositeField actions

[a2nt]

Without recursive search for Actions this code block won't work:

 public function getCMSActions()
 {
        $actions = parent::getCMSActions();

        $actions->addFieldsToTab('ActionMenus.MoreOptions', [
            CustomAction::create('doCreateDefaultElements', 'Create Default Blocks'),
        ]);

        return $actions;
}

So you won't be able to add an action to submenu

[lekoala]

@a2nt good stuff!