Navigation change from top-right corner to Super Sidebar

There is an exploration in the UX department for a new super sidebar which (among other things) will move all navigation to the left-hand "menu" menu, including the Issues/MRs/Todos, the online help, and the user avatar:

If this does go ahead, then we will need to make a documentation change for all mentions of "top right corner" or "top-right corner", and possibly other variations. Here's a quick scan of where these are today

mjl@modi ~/l/gitlab (master)> rg -c "top[ -]right corner"
data/whats_new/202109200001_14_03.yml:1
doc/administration/auth/cognito.md:1
doc/administration/instance_review.md:1
doc/user/profile/preferences.md:1
doc/user/profile/index.md:17
doc/user/profile/account/delete_account.md:1
doc/user/profile/active_sessions.md:2
doc/user/profile/personal_access_tokens.md:3
doc/user/profile/user_passwords.md:1
doc/user/profile/notifications.md:6
doc/user/profile/contributions_calendar.md:3
doc/user/project/issues/managing_issues.md:2
doc/user/project/issues/design_management.md:3
doc/user/project/pages/custom_domains_ssl_tls_certification/lets_encrypt_integration.md:1
doc/user/project/merge_requests/cherry_pick_changes.md:3
doc/user/project/merge_requests/changes.md:1
doc/user/project/merge_requests/revert_changes.md:1
doc/user/project/merge_requests/drafts.md:2
doc/user/project/wiki/index.md:1
doc/user/project/web_ide/index.md:1
doc/user/project/repository/gpg_signed_commits/index.md:3
doc/user/project/releases/index.md:3
doc/user/ssh.md:2
doc/user/group/saml_sso/index.md:1
doc/user/snippets.md:2
doc/user/report_abuse.md:4
doc/integration/oauth_provider.md:2
doc/integration/gitlab.md:1
doc/integration/omniauth.md:1
doc/integration/gitpod.md:1
doc/integration/vault.md:1
doc/integration/github.md:1
doc/integration/sourcegraph.md:1
doc/integration/kerberos.md:1
doc/development/documentation/topic_types/task.md:1
doc/development/documentation/styleguide/index.md:1
doc/operations/metrics/dashboards/settings.md:1
doc/operations/metrics/dashboards/index.md:1
doc/ci/runners/runners_scope.md:1
doc/ci/pipelines/cicd_minutes.md:2
doc/integration/jenkins.md:1
doc/update/upgrading_from_source.md:1
mjl@modi ~/l/gitlab (master)> rg -c "top[ -]right corner"|wc
      42      42    1646