The documentation for the Microsoft Graph directoryAudits endpoint requires the AuditLog.Read.All as a required permission. It is listed as available for both Delegated and Application permission types.
However, I cannot add AuditLog.Read.All as a Delegated permission to my V2 registered app, either via apps.dev.microsoft.com (it does not show as an option in the Delegated permissions picker), or via the new Application Registrations endpoint in the Azure Portal (it throws an HTTP 400 error when attempting to save after selecting AuditLog.Read.All as a Delegated permission).
How do I register AuditLog.Read.All on my application as a delegated permission so that admin consent flow can be performed?