fix: ensure when "login" option is selected it does not appear optional on the donation form #4045
If Login is enabled for a form, it appears as "optional" but is actually required. You cannot submit a donation without logging in.
As a donor, I want to ensure that when a login is required it does not appear optional so that I'm not confused when attempting to donate.
Steps to Reproduce
Check if the login option is set before outputting the "Optional" text