[azure-eventhub] Add support for AMQP-over-WebSocket #47823
Description
Context
The legacy Event Hub SDK prevented us from offering Filebeat users the ability to connect to Event Hubs (and related Storage Account functionalities) using the corporate-friendly AMQP-over-WebSocket approach.
However, the modern Event Hubs SDK now supports the AMQP-over-WebSocket option.
Related issues:
Goal
Enable the azure-eventhub processor v2 to connect to Event Hubs via AMQP-over-WebSocket.
Impact
Opening the standard AMQP port (5672) is sometimes blocked by corporate firewalls, forcing users to rely on port 443. Implementing this feature removes a major deployment barrier for enterprise users.