fix: #3634867 Refuse a description with no letters or digits before calling the provider

Rajab Natshahrequested to merge
issue/ai_media-3634867:3634867-refuse-symbols-only into 1.0.x

Issue: https://www.drupal.org/project/ai_media/issues/3634867

A description with no letter or digit in any script (\p{L}\p{N}) is refused with a field error before any request: "!!! ***" was a paid call and the model invented a subject. The check sits in the generator, so every path that generates gets it. Kernel test added.

Before: a description of only symbols is sent to the provider.

Before

After: "Enter words, not only symbols." under the field, and no request.

After

AI-Generated: Yes

Checkpoints:

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  • Reviewed by human
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  • Release

🤖 Generated with Claude Code

Edited by Rajab Natshah

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