function stopRetries() {
      const mediaSourcePlayhead =
      /** @type {shaka.media.MediaSourcePlayhead} */(playhead);
      mediaSourcePlayhead.videoWrapper_.mover_.timer_.stop();
      mediaSourcePlayhead.videoWrapper_.mover_.maxAttempts_ = 1;
      mediaSourcePlayhead.videoWrapper_.mover_.remainingAttempts_ = 1;
    }
Prevent retries on the initial start time seek.  This will ensure that
only one call is made for the initial seek, and that any additional calls
can be rightly attributed to the application of the seek range.
@suppress {accessControls}