
When the source is prepared again after stop, the period uid is calculated by subtracting the `firstPeriodId` from the period uid that is passed in to `createPeriod`. When this happens after stop, the uid from the old period uid that is still stored and has the value of the last played uid. Hence the `firstPeriodId` must not be reset when released. Issue: google/ExoPlayer#10838 PiperOrigin-RevId: 539028570