AiProviderConfiguration form element doesn't work in nested forms with subform states
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3583705. -->
Reported by: [a.dmitriiev](https://www.drupal.org/user/3235287)
Related to !1470
>>>
<p>[Tracker]<br>
<strong>Update Summary: </strong>[One-line status update for stakeholders]<br>
<strong>Short Description: </strong>[One-line issue summary for stakeholders]<br>
<strong>Check-in Date: </strong>MM/DD/YYYY<br>
<em>Metadata is used by the <a href="https://www.drupalstarforge.ai/" title="AI Tracker">AI Tracker.</a> Docs and additional fields <a href="https://www.drupalstarforge.ai/ai-dashboard/docs" title="AI Issue Tracker Documentation">here</a>.</em><br>
[/Tracker]</p>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>If the form element ai_provider_configuration is used inside nested form then the value callback tries to get the value not from the form state user input but from the immediate value of the element.</p>
<h4 id="summary-steps-reproduce">Steps to reproduce (required for bugs, but not feature requests)</h4>
<p>Please provide information like AI modules enabled, which AI provider, browser, etc.<br>
Add the form element ai_provider_configuration to the nested form. Observe that the returned value is `provider_model` instead of the structure described in <a href="https://project.pages.drupalcode.org/ai/1.3.x/developers/ai_provider_configuration_element/">https://project.pages.drupalcode.org/ai/1.3.x/developers/ai_provider_configuration_element/</a></p>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<h3 id="summary-remaining-tasks">Remaining tasks</h3>
<h3>Optional: Other details as applicable (e.g., User interface changes, API changes, Data model changes)</h3>
<h3 id="summary-ai-usage">AI usage (if applicable)</h3>
<p>[ ] AI Assisted Issue<br>
This issue was generated with AI assistance, but was reviewed and refined by the creator.</p>
<p>[ ] AI Assisted Code<br>
This code was mainly generated by a human, with AI autocompleting or parts AI generated, but under full human supervision.</p>
<p>[ ] AI Generated Code<br>
This code was mainly generated by an AI with human guidance, and reviewed, tested, and refined by a human.</p>
<p>[ ] Vibe Coded<br>
This code was generated by an AI and has only been functionally tested.</p>
issue