feat(ee): Add transcription support for audio messages (#11670)

<img width="419" alt="Screenshot 2025-06-03 at 4 25 37 PM"
src="https://github.com/user-attachments/assets/4b6ddd11-9b91-4981-a571-83746cc4d40b"
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Fixes https://github.com/chatwoot/chatwoot/issues/10182

---------

Co-authored-by: Sojan Jose <sojan@pepalo.com>

enterprise/app/models/enterprise/concerns/attachment.rb

@@ -0,0 +1,15 @@
+module Enterprise::Concerns::Attachment
+  extend ActiveSupport::Concern
+
+  included do
+    after_create_commit :enqueue_audio_transcription
+  end
+
+  private
+
+  def enqueue_audio_transcription
+    return unless file_type.to_sym == :audio
+
+    Messages::AudioTranscriptionJob.perform_later(id)
+  end
+end