🐛 (whatsapp) Fix auto start input where it didn't display next bu… (#869)

…bbles
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
### Summary by CodeRabbit

**Release Notes**

- New Feature: Enhanced WhatsApp integration with improved phone number
formatting and session ID generation.
- Refactor: Updated the `startWhatsAppPreview` and
`receiveMessagePreview` functions for better consistency and
readability.
- Bug Fix: Added a check for `phoneNumberId` in the `receiveMessage`
function to prevent errors when it's undefined.
- Documentation: Expanded the WhatsApp integration guide and FAQs in the
docs, providing more detailed instructions and addressing common
queries.
- Chore: Introduced a new `metadata` field in the
`whatsAppWebhookRequestBodySchema` to store the `phone_number_id`.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/bot-engine/whatsapp/resumeWhatsAppFlow.ts

@@ -71,7 +71,6 @@ export const resumeWhatsAppFlow = async ({
       : workspaceId
       ? await startWhatsAppSession({
           incomingMessage: messageContent,
-          sessionId,
           workspaceId,
           credentials: { ...credentials, id: credentialsId as string },
           contact,