Broken detail due to duplicate actions

[nilmerg]

Describe the bug

property_exists(): Argument #1 ($object_or_class) must be of type object|string, null given

#0 /usr/share/icingaweb2-modules/icingadb/library/Icingadb/Common/Macros.php(51): property_exists(NULL, String)
#1 /usr/share/icingaweb2-modules/icingadb/library/Icingadb/Common/Macros.php(31): Icinga\Module\Icingadb\Web\Navigation\Action->resolveMacro(String, NULL)
#2 /usr/share/icingaweb2-modules/icingadb/library/Icingadb/Web/Navigation/Action.php(117): Icinga\Module\Icingadb\Web\Navigation\Action->expandMacros(String, NULL)
#3 /icingaweb2/library/Icinga/Web/Navigation/NavigationItem.php(759): Icinga\Module\Icingadb\Web\Navigation\Action->getUrl()
#4 /icingaweb2/library/Icinga/Web/Navigation/Navigation.php(380): Icinga\Web\Navigation\NavigationItem->conflictsWith(Object(Icinga\Module\Icingadb\Web\Navigation\IcingadbHostAction))
#5 /icingaweb2/library/Icinga/Web/Navigation/Navigation.php(423): Icinga\Web\Navigation\Navigation->merge(Object(Icinga\Web\Navigation\Navigation))
#6 /usr/share/icingaweb2-modules/icingadb/library/Icingadb/Widget/Detail/ObjectDetail.php(130): Icinga\Web\Navigation\Navigation->load(String)
#7 /usr/share/icingaweb2-modules/icingadb/library/Icingadb/Widget/Detail/HostDetail.php(46): Icinga\Module\Icingadb\Widget\Detail\ObjectDetail->createActions()
#8 /usr/local/src/ipl-html/src/HtmlDocument.php(344): Icinga\Module\Icingadb\Widget\Detail\HostDetail->assemble()
#9 /usr/local/src/ipl-html/src/HtmlDocument.php(566): ipl\Html\HtmlDocument->ensureAssembled()
#10 /usr/local/src/ipl-html/src/HtmlDocument.php(390): ipl\Html\HtmlDocument->render()
#11 /usr/local/src/ipl-html/src/BaseHtmlElement.php(297): ipl\Html\HtmlDocument->renderUnwrapped()
#12 /usr/local/src/ipl-html/src/BaseHtmlElement.php(365): ipl\Html\BaseHtmlElement->renderContent()
#13 /usr/local/src/ipl-html/src/HtmlDocument.php(568): ipl\Html\BaseHtmlElement->renderUnwrapped()
#14 /usr/local/src/ipl-html/src/HtmlDocument.php(390): ipl\Html\HtmlDocument->render()
#15 /usr/local/src/ipl-html/src/HtmlDocument.php(568): ipl\Html\HtmlDocument->renderUnwrapped()
#16 /usr/local/src/ipl-web/src/Compat/ViewRenderer.php(62): ipl\Html\HtmlDocument->render()
#17 /usr/share/icinga-php/vendor/vendor/shardj/zf1-future/library/Zend/Controller/Action/Helper/ViewRenderer.php(970): ipl\Web\Compat\ViewRenderer->render()
#18 /usr/share/icinga-php/vendor/vendor/shardj/zf1-future/library/Zend/Controller/Action/HelperBroker.php(277): Zend_Controller_Action_Helper_ViewRenderer->postDispatch()
#19 /usr/share/icingaweb2-modules/icingadb/library/Icingadb/Web/Controller.php(481): Zend_Controller_Action_HelperBroker->notifyPostDispatch()
#20 /icingaweb2/library/Icinga/Web/Controller/Dispatcher.php(76): Icinga\Module\Icingadb\Web\Controller->dispatch(String)
#21 /usr/share/icinga-php/vendor/vendor/shardj/zf1-future/library/Zend/Controller/Front.php(954): Icinga\Web\Controller\Dispatcher->dispatch(Object(Icinga\Web\Request), Object(Icinga\Web\Response))
#22 /icingaweb2/library/Icinga/Application/Web.php(294): Zend_Controller_Front->dispatch(Object(Icinga\Web\Request), Object(Icinga\Web\Response))
#23 /icingaweb2/library/Icinga/Application/webrouter.php(105): Icinga\Application\Web->dispatch()
#24 /icingaweb2/public/index.php(4): require_once(String)
#25 {main}

To Reproduce

1. Create a host action with name "test" and a macro in the url
2. Share it with user Bob
3. Login as Bob
4. Create a host action name "test" and a macro in the url
5. Visit any host

Expected behavior

No stacktrace.