This addresses issue 4473 where users creating a ticket with the Help Topic
preselected shows a validation error for the Issue Summary field. This is
due to the new `getFormName()` function that creates new field form names
based on the user’s/agent’s session. When the Help Topic is preselected,
`_form` is not set for each field so the hashed name of the fields before
ticket submit is different than after ticket submit.