Make sure that icons are right aligned in QQS

In QQS with a center inset, the right side container is 0dp to take all
of the space. As we want its content right aligned, we put it in a
FrameLayout.

This has no effect when there's no inset.

Test: manual with and without inset
Fixes: 191039767
Change-Id: I8b70777ee79f8647f679ffb6a9a4703e50403dcd