Correctly determine when to display fields as inline

When Drupal displays a field, the template is field.html.twig, which generates block-level markup including optional labels, attributes, and supports multiple values.

For the node title, uid and created fields Drupal supplies an overridden template (e.g. field--node--title.html.twig) that generates simplified inline markup without label or title_attributes.

If the site owner has hooked the node title to setDisplayConfigurable(), then the inline display is incorrect. The label is missing, markup is inline, and the markup might not match normal CSS selectors for fields (for example if the CSS selector specifically matches on div). For the node created field, also the metadata rel="schema:author" is missing.

Solution

Disable the overridden field templates if the fields are setDisplayConfigurable(). To preserve back-compatibility, only do this if an additional entity type property is set - reusing the mechanism from #2923701: Mechanism to disable preprocessing of node base fields so they can be configured via the field UI.

Workaround

/**
 * Implements hook_theme_registry_alter().
 */
function XXX_theme_registry_alter(&$theme_registry) {
  // Disable the 'inline' versions of node base field templates to workaround
  // https://www.drupal.org/node/2993647.
  unset($theme_registry['field__node__title']);
  unset($theme_registry['field__node__uid']);
  unset($theme_registry['field__node__created']);
}