* fix: correct structure of lastMessages in message content
* fix: update send_message to store external_created_at timestamp with result from request
* fix: filter incoming messages for unread conversation logic
* fix: improve extraction of message timestamp in send_message method
* feat: enhance message timestamp extraction and update logic in send_message method
* refactor: send_message to improve error handling and update external_created_at timestamp
* chore: move message timestamp extraction to helper
* fix: use message timestamp extract on incoming
* fix: update unread_conversation to handle last message correctly for Baileys provider
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Co-authored-by: gabrieljablonski <contact@gabrieljablonski.com>
