docs: trigger webhook update for new payload received

[anmol098]

Note

Replaces the GitHub star webhook example with a Gmail new email webhook handler and payload typing.

• Triggers (TypeScript snippet):
  • New Gmail webhook example: Adds GmailNewEmailEventPayload and handleGmailNewEmailEvent to process gmail_new_email_event with typed data.
  • Request handling: Switches condition from payload.triggerSlug to payload.type and constructs TriggerEvent using payload.data.
  • Removes GitHub star payload/type and handler from the example.

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Rechecking

[cursor]

Bug: Webhook Payload Data Assignment Issue

The gmailEvent.data is directly assigned payload.data. This assumes the incoming webhook payload always has a data field and that it includes all necessary properties, such as connection_nano_id, trigger_nano_id, and user_id, which were previously extracted from other payload parts. This could lead to missing data or runtime errors.