Epic: Use GraphQL to query participants
Use participants
from GraphQL in the sidebar.
## Summary
Epics load participants on the initial page-load rather than in an asynchronous call, as issues and MRs do. For epics with a lot of participants this can cause long page-load times.
Related to #119333 (comment 263671170)
Improvements
Use an AJAX call for sidebar extras instead.
Risks
We're in the process of moving sidebar loading to GraphQL, so it may be better to expose this on the backend through it.
Edited by Donald Cook