Merge branch '498927-make-pinning-spec-faster' into 'master'

Make feature spec for pinning and sidebar visibility faster

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/171236



Merged-by: David Dieulivol <ddieulivol@gitlab.com>
Approved-by: David Dieulivol <ddieulivol@gitlab.com>
Co-authored-by: Thomas Hutterer <thutterer@gitlab.com>