title: How to readonly of the TFS work item field but not hidden
body: <p>I added new work item to tfs. for example work item type: cab, states: new, active, closed.</p>
  
  <p>I added field and form element to form layout. for example customer note (type: string)</p>
  
  <p>added readonly field rule on active state in process template workflow.</p>
  
  <p>But it is hidden when I did'nt input text with change new to active. </p>
  
  <p>why? I want to visible my field even so I did not input data.</p>
  
  <p>how can I do?</p>
  
  <p>thanks</p>