Segue updates current activity before first draw but not first update

[TheMaverickProgrammer]

This problem happens when we have a screen which uses the following:

bool MyScene::IsInFocus()
{
  return getController().getCurrentActivity() == this;
}

The segue ends and gives the destination scene the current focus. But the update for this scene had run before this switch happens. Therefore, because of this gap, IsInFocus() will be true after that scene's first onDraw() but only true after that scene's second onTick().

While technically fine, this will be a major developer problem because we expect the updates to reflect the draw and programmers will need to track "next frames" to determine if IsInFocus() is useful for synchronizing the scene state and its drawables.

Additionally, this IsInFocus() is very useful. This should be an available function in Swoosh v2.