title: Bug report: ScrollStrategies does not work when LineSeries consists of the same numbers
body: <p>After building a chart and adding a series to it with the same data set, such as</p>
  <pre><code>const dataSet = [
         {x: 400, y: 0},
         {x: 400, y: 1},
         {x: 400, y: 2},
         {x: 400, y: 3},
         {x: 400, y: 4},
         {x: 400, y: 5},
         {x: 400, y: 6},
      ]
  </code></pre>
  <p>AutoScrolling does not occur, and axis mouse events do not work.
  I used the chrome tools and may have found the problem.
  <a href="https://i.stack.imgur.com/sbQW4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sbQW4.png" alt="enter image description here" /></a></p>
  <p>The Li function in the case when the minimum and maximum LineSeries value returns true and the Cr function returns undefined. Perhaps this is the expected behavior, I don't know.
  <a href="https://i.stack.imgur.com/Sc6jj.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Sc6jj.png" alt="enter image description here" /></a></p>