[MFA Bug] Can not enroll MFA use factor_type = "totp"

[huuvan023]

Bug report

• I confirm this is a bug with Supabase, not with my own application.
• I confirm I have searched the Docs, GitHub Discussions, and Discord.

Describe the bug

model_validate error for class AuthMFAEnrollResponse when we enroll new MFA.

To Reproduce

When enrolling a new MFA factor using the following code:

 self.anon_role.auth.mfa.enroll(
            {
                "factor_type": "totp",
                "friendly_name": "test",
                "issuer": "Test Platform",
                "phone": "xxxx",
            }
        )

It raises the following validation error:
1 validation error for AuthMFAEnrollResponse\nphone\n Field required [type=missing, input_value={'id': 'dc5440a6-7f38-4bf...ARFDY5QLJHF63L3YRRLJ6'}}, input_type=dict]\n For further information visit https://errors.pydantic.dev/2.10/v/missing

After reviewing the source code, the issue originates from the _enroll method:

 def _enroll(self, params: MFAEnrollParams) -> AuthMFAEnrollResponse:
        session = self.get_session()
        if not session:
            raise AuthSessionMissingError()

        body = {
            "friendly_name": params["friendly_name"],
            "factor_type": params["factor_type"],
        }

        if params["factor_type"] == "phone":
            body["phone"] = params["phone"]
        else:
            body["issuer"] = params["issuer"]

        response = self._request(
            "POST",
            "factors",
            body=body,
            jwt=session.access_token,
            xform=partial(model_validate, AuthMFAEnrollResponse),
        )
        if params["factor_type"] == "totp" and response.totp.qr_code:
            response.totp.qr_code = f"data:image/svg+xml;utf-8,{response.totp.qr_code}"
        return response

in the line xform=partial(model_validate, AuthMFAEnrollResponse)

The response I received from supabase server is

{'friendly_name': 'cdiam', 'id': '9fb8848b-49eb-49d3-ae35-daac2e2bf9d5', 'totp':...}

However, the AuthMFAEnrollResponse model expects phone as a required field. Since phone is missing from the API response when using "factor_type": "totp", the validation fails, resulting in the error.

###Potential Fix
Modify the AuthMFAEnrollResponse schema to make phone optional when factor_type is "totp".

Expected behavior

Enroll MFA successfully

Screenshots

System information

Additional context

[linear]

CLIBS-122 [MFA Bug] Can not enroll MFA use factor_type = "totp"