Merge branch 'slashmanov/unify-pinned-file-link-behaviour' into 'master'

Unify Pinned file link behaviour

Closes #463013

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/160343



Merged-by: Phil Hughes <me@iamphill.com>
Approved-by: Kos Palchyk <kpalchyk@gitlab.com>
Approved-by: Phil Hughes <me@iamphill.com>
Reviewed-by: Phil Hughes <me@iamphill.com>
Reviewed-by: Kos Palchyk <kpalchyk@gitlab.com>
Reviewed-by: Stanislav Lashmanov <slashmanov@gitlab.com>
Co-authored-by: Stanislav Lashmanov <slashmanov@gitlab.com>