feat: corrects interaction issues re: 3520541

Christopher Torgalsonrequested to merge
issue/admin_feedback-3520541:3520541-interaction-submission-issues into 8.x-2.x

Changes:

  • ensures "Send feedback" only submits form on "click" event
  • disables "Send feedback" button from PHP instead of javascript
  • ensures "Send feedback" button can be found in module javascript

Closes #3520541

Merge request reports