Simpler layout switch
instead of messing with the margins to make headingElement overlap summaryRow, reparent heading to summaryrow when we are in a group and reparent in headingElement when the notification is single. headingElement is hidden when in group
Reason for the change
The previous way was very hacky, this is still not perfect, but much less and required much less manual margin play to correctly layout things
Test plan
creating a lot of notifications, and go between grouped and not grouped