Problem/Motivation
When using the Views entity area plugin by adding the output of an entity to the footer or header of a view you can select the view mode the entity will be displayed in.
The config object this view mode depends on is not added to the list of depndencies of the view.
Proposed resolution
Add the view mode config to the list of dependencies in \Drupal\views\Plugin\views\area\Entity::calculateDependencies().
