Finish MVP for content editing

app/views/shared/_tabnav_contributions.html.erb

@@ -6,7 +6,9 @@
       active: current_page?(contributions_donations_path)
     ) %>
     <%= render TabnavLinkComponent.new(
-      name: editable_content_for("contributions/other", "title", default: "Other"),
+      name: render(EditableContentComponent.new(
+        context: "contributions/other", key: "title", default: "Other"
+      )),
       path: contributions_other_path,
       active: current_page?(contributions_other_path)
     ) %>