[Bug]: Author name on blog cards doesn't redirect to the author page

### Consisely describe the issue

On the home page and features page, clicking an author's name on a blog card doesn't go to the author's profile, it just lands on https://blog.podman.io/author/ with no slug, which is a broken/generic URL.

The problem is in the WordPress REST API query. The **_fields** parameter doesn't include author, and it turns out the **author_info** field depends on author being present in the request to correctly build the author URL slug.

### Upload screenshots or screen recordings

https://github.com/user-attachments/assets/704f56c5-d50d-4ed0-8db7-ef650106c9ba

### LLM Policy

- [x] This issue is human-written, and folow up comments will also be human-written

Inspect the WordPress REST API query used to populate blog cards on the home and features pages, focusing on its _fields parameter and the author_info field. Include the author data needed to build the slug, then verify that clicking an author name reaches the corresponding author profile rather than /author/.

Written by the indexing model from the issue text.