Payment detection on mobile apps not working

[Klakurka]

This will happen with any mobile app as well. The issue is that the widget lose the ws connection on mobile when switching to another app for the payment, and when resumed the event might have fired already.

Possibly same issue as #560.

[xecdev]

You can use Marlin Wallet or Cashtab PWA to see this issue in action.

https://play.google.com/store/apps/details?id=com.marlinwallet.app