Issue description:
When interstitial is shown the whole game script seem to pause.
I would want to show interstitial while I load some data via http request, but it doesn't seem to work that way.
When I close the interstitial right away the request is not yet completed so it manages to finish normally.
But when I wait for some time before closing. The request is failed when I finally do it.
Godot version: 3.2.2.rc2
Admob Plugin version: 3.0.1
Issue description: When interstitial is shown the whole game script seem to pause. I would want to show interstitial while I load some data via http request, but it doesn't seem to work that way. When I close the interstitial right away the request is not yet completed so it manages to finish normally. But when I wait for some time before closing. The request is failed when I finally do it.