System prompt override causes 405 when using API

[longshuicy]

https://help.uillinois.edu/TDNext/Apps/40/Tickets/TicketDet?TicketID=2106497

[rohan-uiuc]

This is a known issue caused by multiple lines in the prompt. For a quick fix we can suggest the user manually add \n in their prompts instead. And a long term fix it to auto replace "Enter" with \n in the API request builder