Merge "Sets media recommendations's isPlaying status to false instead of null...

Merge "Sets media recommendations's isPlaying status to false instead of null so the card sorting can be consistent." into sc-qpr1-dev am: 9abebd21 am: 2fba14db am: db75c456

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15844857

Change-Id: Ieed9de9508460d23a6b742d5bec83a918fa84f1f