## Is your feature request related to a problem?

We manage around 20 3rd party tools that our internal users can log into using G Suite (part of your enterprise / scale offering). When a user leaves, we need to disable their account. Currently we need to do this in G Suite and then any of the 3rd party tools where password login is still possible.

## Describe the solution you'd like

When a user leaves, we disable their account in G Suite and their account in PostHog becomes disabled too. Essentially, the ability to restrict specific users in PostHog to only be able to login via SSO (defaulting to this setting).

## Describe alternatives you've considered

Manually removing their account, and being the enemy of our IT manager.

## Additional context



#### *Thank you* for your feature request – we love each and every one!

posthog/api/test/test_signup.py
self.client.logout()
        invite: OrganizationInvite = OrganizationInvite.objects.create(
            target_email="test+private@posthog.com", organization=self.organization,
        )
        self.organization.available_features = [AvailableFeature.PROJECT_BASED_PERMISSIONING]
        self.organization.save()
        self.team.access_control = True
        self.team.save()
        response = self.client.post(
            f"/api/signup/{invite.id}/", {"first_name": "Alice", "password": "test_password", "email_opt_in": True},
        )
        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
        user = cast(User, User.objects.order_by("-pk")[0])
        self.assertEqual(user.organization_memberships.count(), 1)
        self.assertEqual(user.organization, self.organization)
        
        self.assertEqual(
            user.current_team, None
        )  
        self.assertEqual(user.team, None)
    def test_api_invite_sign_up_where_default_project_is_private(self):