Fixed the transformation of min priority notifications

The headertext wasn't animating to the title anymore because
the order of the low-priority call has changed in a refactor
We're now looking at the datasource directly instead of looking
at the row state avoiding the ordering issue

Fixes: 151253867
Test: add min priority notification, observe header transforms to title
Change-Id: I7dc8f5fdef4f1f449064e66bcc63a85f7e69a185