title: Is there a way for InputFormatters on a TextFormField to be executed when the form is initially displayed?
body: <p>When <code>inputFormatters</code> are specified on a <code>TextFormField</code>, the <code>initialValue</code> is not processed by the <code>inputFormatters</code>.  </p>
  
  <p>This seems odd.  Is there a recommended way to get the <code>inputFormatters</code> to format the <code>initialValue</code>.</p>
  
  <p>For example, I have a 5 digit number (i.e. 12345) that should be displayed with a comma separator (12,345) in the input field.  By default it displays as 12345, but as soon as I edit the value, the comma separator appears.  The comma separator should be displayed on the initial value.</p>