[Bug]: Postmark Test Webhook

[OzanKurt]

What happened?

Here is the test webhook from postmark:

    {
        "RecordType": "Delivery",
        "ServerID": 23,
        "MessageStream": "outbound",
        "MessageID": "0524eca8-1a94-415b-a673-adb9c9bc533a",
        "Recipient": "john@example.com",
        "Tag": "welcome-email",
        "DeliveredAt": "2025-08-26T14:33:48Z",
        "Details": "Test delivery webhook details",
        "Metadata": {
            "example": "value",
            "example_2": "value"
        }
    }

in the PostmarkDriver it tries to get the UUID from Metadata:

    public function getUuidFromPayload(array $payload): ?string
    {
        return $payload['Metadata'][$this->uuidHeaderName] ??
            $payload['Metadata'][strtolower($this->uuidHeaderName)] ??
            $payload['Metadata'][strtoupper($this->uuidHeaderName)] ??
            null;
    }

But the UUID is provided from the MessageID field in the payload.

    public function getUuidFromPayload(array $payload): ?string
    {
        return $payload['MessageID'] ??
            $this->getUuidFromMetadata($payload);
    }

    public function getUuidFromMetadata(array $payload): ?string
    {
        return $payload['Metadata'][$this->uuidHeaderName] ??
            $payload['Metadata'][strtolower($this->uuidHeaderName)] ??
            $payload['Metadata'][strtoupper($this->uuidHeaderName)] ??
            null;
    }

Is this only an inconsistency between test webhooks or do we need to fix it?

How to reproduce the bug

When I run the webhook via postmarks test webhook data.

Package Version

2.1.0

PHP Version

8.3.4

Laravel Version

12.21.0

Which operating systems does with happen with?

Windows

Notes

No response