Flaky test file spec features work items detail work item detail spec rb

What does this MR do and why?

Fixes flaky spec https://gitlab.com/gitlab-org/quality/test-failure-issues/-/work_items/43756

Since the comments are being broken here as well , most likely Add work_item_features_field FF for notes and f... (!247732 - merged) should also fix it

References

Screenshots or screen recordings

Before	After

How to set up and validate locally

bin/rspec spec/features/work_items/detail/work_item_detail_spec.rb

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