textarea fields reload as rich text on validation error

this is a strange one and could be very problematic. to reproduce:

• create a custom data set with a Note field set to text area display
• create a profile with one field set to required and then add this custom note field
• view the form in create or edit view
• submit the form with the required field empty to trigger form validation

when the form reloads the text area field is rendered with the wysiwyg editor.

that could be a real problem if you need to make sure the user does not enter html.

reproduced here: http://dmaster.demo.civicrm.org/civicrm/profile/edit?gid=16&reset=1