Publish a course with start date in the past

I duplicated a course that had a start date in the past. When I tried to publish the duplicated course, the system allowed it without any error. However, we should actually show an error at the time of publishing if the start date is in the past, and prompt the user to update it.

https://sharing.clickup.com/clip/p/t9004002740/7a6928e0-f416-4f7b-a0e6-6da8250ce74d/publish%20a%20course%20with%20start%20date%20in%20past.webm