Background
The results from T294506: Run A/B test to evaluate impact of sticky header editing affordance showed that the edit button in the sticky header performed better overall in terms of edit completion as well as revert rates when compared to the control group. This means we would like the edit button in the sticky header to be the default across all wikis
Currently the feature is only available to pilot Wikipedias, we'd like to enable it for projects where Vector 2022 is opt-in e.g. not default.
Acceptance criteria
- Make the edit button in the sticky header default for all wikis (which have a sticky header) via backport deploy
- Remove the feature flag once we're sure everything is fine.