Update gitlab_sign_out helper for new navigation
What does this MR do and why?
Update gitlab_sign_out
helper for new navigation
Update usage of gitlab_sign_out
to remove :no_super_sidebar
trait
MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
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I have evaluated the MR acceptance checklist for this MR.
Related to #420121 (closed)