In some streaming scenarios, like offload, the sink may finish writing buffers a bit before playback reaches the end of the track. In this case a player may pause while in this 'stopping' state.
The AudioTrackPositionTracker needs to update the cached values it uses to calculate position in the `PLAYSTATE_STOPPED`/`PLAYSTATE_STOPPING` states if pause/play are called during this period.
PiperOrigin-RevId: 571345914