Unable to add WhatsApp channel

### Describe the bug

I am using Chatwoot v2.18.0 Docker Image.

I am facing a problem while
adding WhatsApp Channel with following message

“We were not able to save the WhatsApp channel”.

While checking the documentation i could see an additional field named “Webhook Verify Token” in documentation but not in my instance.

i have even tried another instance with cwctl v2.18.0. but same outcome. Found “422 Unprocessable Entity” in logs

Could you please let me know how to proceed?

### To Reproduce

1. In Inboxes -> Select "Add Inbox"
2. Choose a channel > WhatsApp
3. Select "API Provider" as WhatsApp Cloud
This form is not having additional field "Webhook Verify Token" after the field "API Key" as in documentation https://www.chatwoot.com/docs/product/channels/whatsapp/whatsapp-cloud

4. Fill in the details and Apply "Create WhatsApp Channel" will result in toast message “We were not able to save the WhatsApp channel”.

### Expected behavior

_No response_

### Environment

Linux VM

### Cloud Provider

DigitalOcean

### Platform

Browser

### Operating system

Ubunt 20x

### Browser and version

Chrome Version 114.0.5735.199

### Docker (if applicable)

_No response_

### Additional context

_No response_