move mandatory vue entry point from optional path

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

-#js-pipeline-header-vue.pipeline-header-container
 
 - if @commit.present?
   .commit-box

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

@@ -4,6 +4,9 @@
 - page_title "Pipeline"
 
 .js-pipeline-container{ class: container_class, data: { controller_action: "#{controller.action_name}" } }
+
+  #js-pipeline-header-vue.pipeline-header-container
+
   - if @commit
     = render "projects/pipelines/info"