Allow close set to false in the project settings does not prevent the user from closing the game window

User can still close the game window when the "Allow close" option is set to false. When unchecking similar options (such as allow maximize) the buttons are no longer available.

1. Open the editor
2. Open project settings
3. Uncheck "Allow Close" (Project settings > Description > settings > Allow Close)
4. Play in Stand alone
5. Alt+Tab to free your mouse
6. Click the [ X ] button to close window
7. Notice that the window closes

Expected: The window would not close and/or the button would not be visible
Result: The window closes and the close button is still visible/available