### Description

At the moment the Azure Data Factory hook only supports `TokenCredential` (service principal client ID and secret). It would be very useful to have support for other authentication types like managed identity. Preferably, we would create a `DefaultTokenCredential` if the client ID and secret are not provided in the connection.

### Use case/motivation

We're using Airflow on Azure Kubernetes Service and this would allow us to use the pod identity for authentication which is a lot cleaner than creating a service principal.

### Related issues

_No response_

### Are you willing to submit a PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

airflow/providers/microsoft/azure/hooks/data_factory.py
self,
        linked_service_name: str,
        resource_group_name: Optional[str] = None,
        factory_name: Optional[str] = None,
        **config: Any,
    ) -> LinkedServiceResource:
        """
        Get the linked service.
        :param linked_service_name: The linked service name.
        :param resource_group_name: The resource group name.
        :param factory_name: The factory name.
        :param config: Extra parameters for the ADF client.
        :return: The linked service.
        """
        return self.get_conn().linked_services.get(
            resource_group_name, factory_name, linked_service_name, **config
        )
    def _linked_service_exists(self, resource_group_name, factory_name, linked_service_name) -> bool:
        """Return whether or not the linked service already exists."""
        linked_services = {
            linked_service.name
            for linked_service in self.get_conn().linked_services.list_by_factory(
                resource_group_name, factory_name
            )
        }
        return linked_service_name in linked_services
    @provide_targeted_factory
    def update_linked_service(