Layout Paragraphs widget not supported in real-time form translation

Similar to https://www.drupal.org/project/auto_translation/issues/3511091, paragraph fields are not translated when using the Translate tab (real-time translation). In this case, the issue is specific to the drupal/layout_paragraphs widget, which uses a completely different form structure instead of the standard widget/subform structure that translateParagraphs() expects.

Bulk translation works correctly because it uses entity-based approach, which doesn't depend on form structure. The same approach can be reused as a fallback in translateParagraphs() when the standard subform is not available, but a layout_paragraphs builder is detected.

Let me know if you have a better approach in mind