[QUARANTINE] Create Default merge request templates uses default template when creating a merge request

What does this MR do?

Quarantines the test Create Default merge request templates uses default template when creating a merge request (https://gitlab.com/gitlab-org/gitlab/-/blob/master/qa/qa/specs/features/ee/browser_ui/3_create/merge_request/default_merge_request_template_spec.rb#L18)

This test has been found by Confiner to have been failing for more than (or equal to) 3 times. This test has failed 4 times.

1. ee:instance-parallel
2. ee:relative_url-parallel
3. ee:update-parallel
4. ee:praefect-parallel

#349827 (closed)

(This MR was automatically generated by Confiner at 2022-01-21 01:42:49 UTC)