Project Settings Repo Headers Expand/Collapse 3/8

Project Settings General Headers (h4 elements) expand/collapse on
mouse-click / tap, like using the Expand/Collapse button. Other h4
headers in other Project Settings pages do not expande/collapse on
mouse-click / tap, but only using the Expand/Collapse button. This may
seem inconsistent to the user.

The h4 headers of Project Settings General get the expand/collapse
behavior through classes settings-title, js-settings-toggle and
js-settings-toggle-trigger-only.

This MR adds classes settings-title, js-settings-toggle and
js-settings-toggle-trigger-only to the h4 headers in Project Settings
Repositories Protected branches. This enables the expand/collapse
behavior on mouse-click / tap for the h4 headers.

app/views/projects/protected_branches/shared/_index.html.haml

@@ -2,7 +2,7 @@
 
 %section.settings.no-animate#js-protected-branches-settings{ class: ('expanded' if expanded), data: { qa_selector: 'protected_branches_settings_content' } }
   .settings-header
-    %h4
+    %h4.settings-title.js-settings-toggle.js-settings-toggle-trigger-only
       Protected branches
     %button.btn.gl-button.js-settings-toggle.qa-expand-protected-branches{ type: 'button' }
       = expanded ? 'Collapse' : 'Expand'

changelogs/unreleased/205484-06-project-settings-headers-repository-protected-branches.yml

+---
+title: Project Settings CI/CD Variables header expands/collapses on click / tap
+merge_request: 55230
+author: Daniel Schömer
+type: changed