[AR] help I tried to commit suicide due to work stress now back at work, company wants me to attend mandatory social event

Kind of what title says

Due to stress and coworkers that refuse to talk to me I went into a spiral. Tried to commit suicide because of the stress and environment. I went on leave. Currently getting treatment but now back at work.

Upon returning co-workers treating me like I inconvenienced them by being off.. they have no idea why and prefer it that way.

Our work is holding a social function that will be all day and nothing but drinking and talking. I RSVP no as the idea of socializing with people that care nothing for me. I’d rather just be working in a quiet office. Kind of looking forward to that actually.

Today I was advised I would be required to go.

I really can’t handle being around these people in a social setting and don’t find it at all healthy to force it.

What do I do?