title: Formly, primeng not able to set value of mindate(datepicker) in component using angular
body: <p>I am using angular formly and primeng. I have FormlyFieldCalendar and AppComponent in place.
  Setting the property of minDate in  and initialiting the value in FormlyFieldCalendar with minDate works fine, but when i am trying to set the minDate in AppComponent field its not working.
  Please find below both the scenarios, i have built the sample on StackBlitz for demonstration with link : <a href="https://stackblitz.com/edit/ngx-formly-ui-primeng-d7v5g4-nu6ctj?file=app/formly-field-primeng-calendar.ts" rel="nofollow noreferrer">https://stackblitz.com/edit/ngx-formly-ui-primeng-d7v5g4-nu6ctj?file=app/formly-field-primeng-calendar.ts</a></p>
  <p><strong>Scenario 1:</strong> (Works fine)</p>
  <p><a href="https://i.stack.imgur.com/MhM2k.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/MhM2k.png" alt="enter image description here" /></a></p>
  <p><strong>Scenario 2:</strong> (Not working)</p>
  <p>I now tried removing the code of setting minDate in FormlyFieldCalendar instead trying to set in Appcomponent by 2 ways.</p>
  <ol>
  <li>By assigning in templateOptions.</li>
  <li>By using datePickerOptions provided in formly.dev webpage but seems doesnt work with primeng.</li>
  </ol>
  <p><a href="https://i.stack.imgur.com/tz1wH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tz1wH.png" alt="enter image description here" /></a></p>