FIX. A Completion.Context.Context.OnSelectOutlineNode() for imports of abstract members

Now: ![](http://service.crazypanda.ru/v/clip2net/K/y/U3Vb3xCiHM.png)
After fix: ![](http://service.crazypanda.ru/v/clip2net/f/G/SFdAS6CIpK.png)