We've encountered an issue related to two-factor authentication cookie validation after a major Django version upgrade, as detailed in issue [#686](https://github.com/jazzband/django-two-factor-auth/issues/686). This issue arises due to the change in user password hashes when Django's hash iteration count is updated in a new version, leading to a mismatch in the two-factor authentication cookies' validation.

We can for now implement a workaround. This involves catching the `BadSignature` exception raised during the cookie validation process when there's a mismatch in the hashes. This situation occurs after upgrading Django, which causes the user's password hash to change, thereby invalidating the existing two-factor authentication cookies.

This issue is critical for us to upgrade our Django version without disrupting the user experience of people coming back and having a 2FA cookie.

posthog/api/authentication.py
status_code = 401
    default_detail = "2FA is required."
    default_code = "2fa_required"
class LoginSerializer(serializers.Serializer):
    email = serializers.EmailField()
    password = serializers.CharField()
    def to_representation(self, instance: Any) -> Dict[str, Any]:
        return {"success": True}
    def _check_if_2fa_required(self, user: User) -> bool:
        device = default_device(user)
        if not device:
            return False
        
        for key, value in self.context["request"].COOKIES.items():
            if key.startswith(REMEMBER_COOKIE_PREFIX) and value:
                if validate_remember_device_cookie(value, user=user, otp_device_id=device.persistent_id):
                    user.otp_device = device  
                    device.throttle_reset()
                    return False
        return True
    def create(self, validated_data: Dict[str, str]) -> Any:
        
        sso_enforcement = OrganizationDomain.objects.get_sso_enforcement_for_email_address(validated_data["email"])
        if sso_enforcement:
            raise serializers.ValidationError(
                f"You can only login with SSO for this account ({sso_enforcement}).",
                code="sso_enforced",