Rollout FF preferred_language_switcher
Related issue link:
What does this MR do and why?
Remove feature flag preferred_language_switcher, to enable language switch by default.
JiHu has enabled this feature flag, preview address: https://jihulab.com/users/sign_in
The button position of JiHu is different from Upstream, it is at the top right of the page, while the button of Upstream is in the footer.
Screenshots
/cc JiHu EM @prajnamas
Edited by Baodong