`tns run ios --justlaunch` does not release the console

Steps to reproduce:
```
tns create TestApp
tns run ios --path TestApp --emulator --justlaunch
```
Expected:
Console is released when app is started

Actual:
Console is not released.

It looks valid only for `tns run ios --justlaunch`, `tns run android --justlaunch` is fine.

Found in `nativescript@3.0.0-2017.3.23.4`