从 https://github.com/dotnet/runtime 中的对应源码 发现 ServiceProviderEngineScope 实现了 IServiceScopeFactory

internal sealed class ServiceProviderEngineScope : IServiceScope, IServiceProvider, IAsyncDisposable, IServiceScopeFactory
{ }

从 ServiceProvider 的实现源码 ServiceProvider.cs#L187 发现 CreateScope 方法的实现就是创建 ServiceProviderEngineScope 实例

internal IServiceScope CreateScope()
{
    if (_disposed)
    {
        ThrowHelper.ThrowObjectDisposedException();
    }

    return new ServiceProviderEngineScope(this, isRootScope: false);
}

于是通过下面的代码解决了问题

IServiceCollection services = new ServiceCollection();
var serviceProvider = services.BuildServiceProvider();
var scopeFactory = (IServiceScopeFactory)serviceProvider.CreateScope();
IContactInfoRulesService contactInfoRulesService = new ContactInfoRulesService(scopeFactory);