Add feature card list component to mother node.

Closes #3477134

modules/drupalorg_test_content/content/file/2395d13d-2b5e-4938-a7cc-28c427085fcc.yml

+_meta:
+  version: '1.0'
+  entity_type: file
+  uuid: 2395d13d-2b5e-4938-a7cc-28c427085fcc
+  default_langcode: en
+default:
+  uid:
+    -
+      target_id: 1
+  filename:
+    -
+      value: princeton-case-study_7.png
+  uri:
+    -
+      value: 'public://princeton-case-study_7.png'
+  filemime:
+    -
+      value: image/png
+  filesize:
+    -
+      value: 1574745
+  status:
+    -
+      value: true
+  created:
+    -
+      value: 1727988667