Remove `prevent_issue_epic_search` feature flag
What does this MR do and why?
This issue removes the 'prevent_issue_epic_search' feature flag, as it has been enabled for more than one day on production.
MR acceptance checklist
Screenshots or screen recordings
N/A
How to set up and validate locally
Duo Chat should be able to answer all of these with no error:
- (on an issue page)
What is this issue about?
- (on any page)
Can you find the issue where the empty streaming bug was fixed on Duo Chat?
[should say it can't search] - (on an epic page)
What is this epic about?
- (on any page)
Can you find the epic about making Duo Chat more user-friendly?
[should say it can't search]
Related to #463698 (closed)
Edited by Lesley Razzaghian