title: Angular Material, Mat Chips Autocomplete Bug, matChipInputTokenEnd executed before optionSelected
body: <p>When typing some text into the input and selecting an option from the autocomplete by hiting enter, it saves as chips both of the strings. <a href="https://i.stack.imgur.com/4rIYG.png" rel="noreferrer">Image here</a></p>
  
  <p>However, this doesn't happen when selecting an option from the autocomplete with the mouse.</p>
  
  <p>In the example provided on <a href="https://material.angular.io/components/chips/overview" rel="noreferrer">Angular Material Autocomplete Chips</a>, in the case described, the optionSelected fires first, while in the same code on my local machine it is executed after matChipInputTokenEnd, thus, leading to the bug.</p>
  
  <p>Has anyone encountered this problem?</p>