search_api_attachments_entity_view() assumes the entity is a node

Problem/Motivation

hook_entity_view() is for any entity, and SearchAPI allows indexing all types of content entities.

However, the implementation of the hook, search_api_attachments_entity_view(), assumes the field for the entity ID is a node nid:

          ($query = \Drupal::entityTypeManager()
            ->getStorage('search_api_index')
            ->load($index->id())
            ->query()
          )
            ->addCondition('nid', $entity->id());

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes