[xwiki-notifications] [jira@xwiki.org][Issue] (XWIKI-22066) Improve default image alternative to potentially use the attachment description field

Attachments:

• attachment.html (text/html — 13.7 KB)
• attachment.png (image/png — 419 bytes)
• attachment.png (image/png — 3.2 KB)
• attachment.png (image/png — 1.1 KB)