IdentitySet class does not have 'phone' property

Describe the bug

When trying to make a phone call, I specify the IdentitySet of the Target user like this:

    targets = [
        InvitationParticipantInfo(
            identity = IdentitySet(
                phone = Identity(
                    id = "+mynumber"
                )
            )
        )
    ]

However I get the following error "IdentitySet.init() got an unexpected keyword argument 'phone'" stating that this parameter is not available for the IdentitySet class.
This works when calling from the rest API

Expected behavior

Parameter should be present in the class, just like the user parameter for calling an teams userid

How to reproduce

target_identity = IdentitySet(phone=Identity(id=graph_p.phone_number))
target = InvitationParticipantInfo(
    identity = target_identity
)
request_body = Call(
    callback_uri = "myballback",
    tenant_id = tenant_id,
    source = ParticipantInfo(
        identity = IdentitySet(
            application = Identity(
                id = bot_instance_id
            )
        )
    ),
    targets = [target],
    requested_modalities = [Modality.Audio],
    media_config = ServiceHostedMediaConfig(
        pre_fetch_media = []
    )
)

SDK Version

No response

Latest version known to work for scenario above?

No response

Known Workarounds

Use IdentitySet additional_data parameter in order to inject the phone parameter to the body

Debug output

</details>


### Configuration

_No response_

### Other information

_No response_

Parti dal punto di ingresso del modello IdentitySet e riproduci la costruzione IdentitySet(phone=Identity(...)) riportata nell'issue. Confronta i parametri del costruttore supportati con la struttura della REST API e verifica che una destinazione phone possa essere rappresentata nel corpo della richiesta generata senza usare additional_data.