The app return to initial scene when the screen is block..Android

### Version
Tell us which versions you are using:

- react-native-router-flux v4.0.6
- react v16.?.?
- react-native v16.8.4

### Expected behaviour

The app continue in the last scene

### Actual behaviour
the app hide and restar when active the screen block on Android

### Steps to reproduce
For non-obvious bugs, please fork this component, modify Example project to reproduce your issue and include link here.
1. Go to specific scene or View
2. Wait until the screen off
3. Enabled the screen on cellphone