Quarantine elastic issue search spec
What does this MR do and why?
This MR long-term quarantines ee/spec/models/concerns/search/elastic/issues_search_spec.rb
because it was fixed in !157455 (merged), so we can validate in an unquarantine MR.
See incident gitlab-org/quality/engineering-productivity/master-broken-incidents#7050 (closed) and fast-quarantine gitlab-org/quality/engineering-productivity/fast-quarantine!209 (merged)
Edited by Kev Kloss