Node templates can add extra h2 elements when rendered in view modes other than full

Problem/Motivation

Default node.html.twig adds the following when $page is FALSE

<h2 class="node__title">
<a href="/about-us/dept/security-test" rel="bookmark"><span class="field field--name-title field--type-string field--label-hidden">Security test</span>
</a>
</h2>

Steps to reproduce

Proposed resolution

Add an implementation of hook_preprocess_node

In this set $variables['page'] to TRUE when the $variables['elements']['#view_mode'] is ‘ca3’

Update existing CdfRenderSubscriberTest test to assert that the h2 isn’t output (this code exists in node/template/node.html.twig so should be happening in the test too)

Remaining tasks

User interface changes

API changes

Data model changes