Fixed a bug where shelf notifications were interactable

Even if the notifications were clipped fully they were still
interactable and could be expanded into the shelf.
This could lead to weird scrolling positions and other things.

Test: manual, try expanding when qs is expanded
Change-Id: I764a20ba83b19ca9c9c2cb311a5abb9d272c6feb
Fixes: 62476893
2 files changed