Liferay.Form JS doesn't prevent form submission if event.preventDefault() is called

• Type: Bug
• Status: Closed
• Resolution: Won't Fix
• Affects Version/s: 6.1.0 CE GA1
• Fix Version/s: 6.1.10 EE GA1, --Sprint 11/12, 6.2.0 CE M2
• Component/s: ~ [Archived] Frontend Infrastructure
• Labels: None
• Branch Version/s:
  6.1.x
• Backported to Branch:
  Committed
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/4129

When attaching a listener to a form's submit event, if we call preventDefault(), we should be preventing the form from being submitted.
However, we're currently always submitting unless stopPropagation has been called. This should instead be set to either stopped or prevented.