Playback device to not send <Inactive Source> before <Standby>

Test: atest and manual
Bug: 183603416

Change-Id: Iee4ae7b9d9bf86c2e984483c16d9875a312a05ae
Merged-In: Iee4ae7b9d9bf86c2e984483c16d9875a312a05ae
2 files changed