Merge branch '346209-frontend-change-the-pipeline-page-fixed-layout-to-full-width' into 'master'

Change the Pipeline page fixed layout to full-width

See merge request gitlab-org/gitlab!78124

app/views/projects/pipelines/show.html.haml

+- @force_fluid_layout = true
 - add_to_breadcrumbs _('Pipelines'), project_pipelines_path(@project)
 - breadcrumb_title "##{@pipeline.id}"
 - page_title _('Pipeline')