Merge branch 'group-label-page-breadcrumb' into 'master'

Fix breadcrumb on labels page for groups

Closes #42909

See merge request gitlab-org/gitlab-ce!17045

app/views/groups/labels/new.html.haml

 - breadcrumb_title "Labels"
 - page_title 'New Label'
-- header_title group_title(@group, 'Labels', group_labels_path(@group))
 
 %h3.page-title
   New Label

changelogs/unreleased/group-label-page-breadcrumb.yml

+---
+title: Fix breadcrumb on labels page for groups
+merge_request: 17045
+author: Onuwa Nnachi Isaac
+type: fixed