Merge branch 'ps-fix-breadcrumb-style' into 'master'

Fix breadcrumb style broken in external_file page

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/143597



Merged-by: Alexander Turinske <aturinske@gitlab.com>
Approved-by: drew stachon <730684-drew@users.noreply.gitlab.com>
Approved-by: Lee Tickett <ltickett@gitlab.com>
Approved-by: Alexander Turinske <aturinske@gitlab.com>
Co-authored-by: Paul Slaughter <pslaughter@gitlab.com>

app/views/projects/artifacts/_file_navigation.html.haml

+- add_page_specific_style 'page_bundles/projects'
+- add_page_specific_style 'page_bundles/tree'
+
 .nav-block
   %ul.breadcrumb.repo-breadcrumb
     %li.breadcrumb-item