Remove ContainerAwareTrait from CacheFactory and ChainedFastBackendFactory

This also fails in ServiceProviderTestServiceProvider:

    // Make sure a cached service can be also called in a service provider.
    // https://www.drupal.org/project/drupal/issues/2363351
    /** @var \Drupal\Core\Extension\ModuleHandlerInterface $module_handler */
    $module_handler = $container->get('module_handler');

The module handler ultimately depends on the cache factory, but because of the way the service locator is injected we end up with this error:

1) Drupal\KernelTests\Core\DrupalKernel\DrupalKernelTest::testCompileDIC
Symfony\Component\DependencyInjection\Exception\RuntimeException: Constructing service "cache_factory" from a parent definition is not supported at build time.

As we need cacheable services accessible at container build time, not sure there is a way around this; we might have to inject the entire container instead.

ChainedFastBackendFactory follows the same pattern. Have not figured out how to work around the issue in #5, so the simplest solution is just to continue injecting the container into both factory services.

Yeah no CR is needed, no API is changing here really, we are just copying the method and property directly into the class.