fix: used to join instances with duplicate instance ids
Summary
- fix: used to join instances with duplicate instance ids
Before this change we would silently replace an instance with current grade not Online if a new instance with the same name wanted to join. This was a mistake as it would allow a race condition when joining several instances at once.
- Close #174 (closed)
- Changes should be cherry-picked to 24.2: no
Edited by Yaroslav Dynnikov