Cannot delete malicious calendar invitation on https://outlook.live.com/calendar (Free Account)

I received a malicious calendar invitation. It does NOT appear in my web email nor calendar on https://outlook.live.com/calendar - Windows 10 Enterprise 22H2. It DOES appear on my iPhone - iOS 17.1.2. See attached. 

My only option is to choose Accept, Maybe, or Decline. If I do any of those things it will send a message to the sender letting them know they found a valid email address. So, this is not an option.

My Question: How do I delete this calendar invitation without notifying the jackass that sent it?