[QUARANTINE] [nightly] Create Open Web IDE from Diff Tab opens and edits a multi-file merge request in Web IDE from Diff Tab

What does this MR do?

Quarantines the test Create Open Web IDE from Diff Tab opens and edits a multi-file merge request in Web IDE from Diff Tab (https://gitlab.com/gitlab-org/gitlab/-/blob/master/qa/qa/specs/features/browser_ui/3_create/web_ide/open_web_ide_from_diff_tab_spec.rb#L52)

This test has been found by Confiner to have failed 5 times, which exceeds the threshold of 3 times.

1. ee:update
2. ce:upgrade
3. ee:instance-image
4. ee:instance-image-slow-network
5. ee:nplus1-instance-image

#396616 (closed)

(This MR was automatically generated by Confiner at 2023-03-16 01:17:52 UTC)