Fix bug that was causing bulk issue assignment to fail
What does this MR do?
This MR fixes a bug that was failing rspec 18 20 as found in https://gitlab.com/gitlab-org/gitlab-ee/builds/15462261
Are there points in the code the reviewer needs to double check?
Shouldn't be
Why was this MR needed?
Fixes failing build
Screenshots (if relevant)
None
Does this MR meet the acceptance criteria?
Yes