Track Zen Mode status in the NotificationRecord

This requires the record to be present in makeRankingUpdateForListener,
however, if the ranking object is created before the post to the handler,
then no cloning is necessary.

Depends-On: I907a1ff28123219db1c08889d723ad1b70b191ab
Change-Id: I51fcf689ddbee7715e3387b865f18a715887c943