estimateP98LongestInteraction = () => {
  const candidateInteractionIndex = Math.min(
    longestInteractionList.length - 1,
    Math.floor(getInteractionCountForNavigation() / 50),
  );

  return longestInteractionList[candidateInteractionIndex];
}
Returns the estimated p98 longest interaction based on the stored
interaction candidates and the interaction count for the current page.