Fix opening of info window of marker

[rabauss]

This is a hotfix for egeloen#279

The opening event of a info window of a marker needs the marker object! To prevent the adding of another event here:

ivory-google-map/src/Helper/Subscriber/Overlay/InfoWindowOpenSubscriber.php

Line 60 in 34139b5

$event->addCode($formatter->renderCode($this->infoWindowOpenRenderer->render($infoWindow, $map)));

the open property of infoWindow needs to be reseted after adding the new event for the info window of a marker!

[bresam]

Thank you for your contribution 🎉