Use original_filename to get the name of the file attached to the message.
Had to add the message_type method to the WhatsApp/incoming_message_service due to the Assignment Branch Condition linter error for the attach_files method.
Fixes#4183
- Ability to configure telegram bots as a channel in chatwoot
- Receive a message sent to the telegram bot in chatwoot
- Ability to reply to telegram users from chatwoot
- Receive attachment messages in chatwoot
fixes: #1843
