ENH : rendering selection enhanced on resizing

- instead of setting m_renderAllselection to false before rendering then to true after it, we are going to set it to true before calling RenderSelection and set it to false after, which will be way convenient to be sure we don't renderSelection for nothing by controling it directly.
- To allow the renderselection when interacting with the mouse, we created two observers on BeginInteraction and EndInteraction on the Interactor, which will respectively set m_renderAllselection to true and false.