Correct focus in Objects Explorer (vs2017 and vs2019) (PR #9415)
Enforced UIA implementation of all UI elements in Visual Studio 15.3 and up.
This adds an overlay class for the tree view items in object explorer. It takes a `focusRedirect` event and checks for its states
If `STATE_FOCUSED` is not in the states set, it redirects the event to the real focused object.
I'm not really sure if it is the right way of doing this.
Closes #9311
