Fix component runtime for UX 2.22

[squrious]

Previous update for 2.21 used a wrong service id (.ux.twig_component.twig.component_runtime). This service was hidden and has been removed in UX 2.22.

This PR adds another way to bypass the twig component runtime, with a custom runtime loader.

PHPUnit fails because of new Twig deprecations, this has to be fixed in a future PR.

[ttsuru]

When I try this pull request, I get an error with the code below.

<twig:Foo>
  <twig:Bar />
</twig:Foo>

Storybook\Exception\RenderException: Story render failed: An exception has been thrown during the rendering of a template ("Storybook context already exists.") in "aaaaaaa.html.twig" at line 2.
   at vendor/sensiolabs/storybook-bundle/src/StoryRenderer.php:40
   at Storybook\StoryRenderer->render(object(Story))      (vendor/sensiolabs/storybook-bundle/src/Controller/StorybookController.php:43)
   at Storybook\Controller\StorybookController->__invoke(object(Request), 'title--default')      (vendor/symfony/http-kernel/HttpKernel.php:183)

[ttsuru]

ref #50