Venue-Sorting in admin listing (kind of) duplicates existing events

Describe the bug

https://github.com/user-attachments/assets/0dc94004-4d5a-4ff1-bedb-3d8f25e4ba91

Steps to Reproduce

Try to sort events by venue in the admin post listing.

Screenshots, screen recording, code snippet

No response

Environment information

No response

WordPress information

https://playground.wordpress.net/?blueprint-url=https%3A%2F%2Fraw.githubusercontent.com%2FGatherPress%2Fgatherpress%2Fmain%2F.wordpress-org%2Fblueprints%2Fblueprint.json

Code of Conduct

• [x] I agree to follow this project's Code of Conduct