updateProgress() {
    if (this.asset_.storedProgress < 1) {
      this.progressCircle_.classList.remove('hidden');
      for (const button of this.actions_.childNodes) {
        if (button instanceof HTMLButtonElement) {
          button.disabled = true;
        }
      }
    } else {
      this.progressCircle_.classList.add('hidden');
      for (const button of this.actions_.childNodes) {
        if (button instanceof HTMLButtonElement) {
          button.disabled = false;
        }
      }
    }
    this.styleProgressCircle_(this.asset_.storedProgress);
  }
Updates the progress bar on the card.