[AI Content Suggestions] Don't show empty vocabularies
>>> [!note] Migrated issue
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<!-- Migrated from issue #3521499. -->
Reported by: [marcus_johansson](https://www.drupal.org/user/385947)
Related to !574
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>When using AI Content Suggestions with Taxonomy Suggestions, currently you can pick a vocabulary that has no items and end up with a</p>
<p><code>To assist with this request, I will need you to provide the JSON list of words that you mention. Without the list, I can't determine which words from the example text are relevant or should be selected. Please provide the JSON list, and I will help you generate the appropriate comma-delimited list.</code></p>
<h4 id="summary-steps-reproduce">Steps to reproduce</h4>
<p>Add a vocabulary without terms.<br>
Try to get the suggestions to show these.</p>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<p>Make any vocabulary with 0 items disabled.<br>
Mention this in the description.</p>
issue