Add a node to default test contnent to showcase CTA List.

Test content in conjunction with https://www.drupal.org/project/bluecheese/issues/3488478#comment-15868057

modules/drupalorg_test_content/content/file/0928ecca-f073-48f2-950b-780cd0bf5f90.yml

+_meta:
+  version: '1.0'
+  entity_type: file
+  uuid: 0928ecca-f073-48f2-950b-780cd0bf5f90
+  default_langcode: en
+default:
+  uid:
+    -
+      target_id: 1
+  filename:
+    -
+      value: platformsh-promo_1.png
+  uri:
+    -
+      value: 'public://platformsh-promo_1.png'
+  filemime:
+    -
+      value: image/png
+  filesize:
+    -
+      value: 93561
+  status:
+    -
+      value: true
+  created:
+    -
+      value: 1732144828