Fix game navigation issue

Fixed start game screen being replaced by end screen when exiting a runnnning game

src/screens/Game/screens/GameMainScreen.js

@@ -82,7 +82,7 @@ class GameMainScreen extends React.Component<PropsType, StateType> {
   }
 
   componentWillUnmount() {
-    this.logic.endGame(false);
+    this.logic.endGame(true);
   }
 
   getRightButton = (): React.Node => {