Conserve activity flag after notif update

When reloading the metadata or changing the stream state, let's conserve
the previous activity state.

Fixes: 159642373
Test: manual
Test: atest MediaDataManagerTest
Test: atest MediaTimeoutListenerTest
Change-Id: I23cc9485c36be31c3fc2d6b3935dc829f2131afd
3 files changed