[xwiki-notifications] [[email protected]][Issue] Updates for XWIKI-25183: Allow the page and attachment pickers to reject references to entities that don't exist

Attachments:

• attachment.html (text/html — 23.9 KB)
• attachment.png (image/png — 267 bytes)
• attachment.png (image/png — 625 bytes)
• attachment.png (image/png — 3.2 KB)