Spiral: Twig not provided by the Spiral Twig Bridge

[alexander-schranz]

Like mezzio plates integration before where we fixed it. The Spiral Twig integration does not provide the Twig Engine Twig\Environment / twig as a service and this make usage of it hard. Currently a hack here is used here to get Twig instance of Spiral which is very hacky:

templating/src/Integration/Spiral/Twig/Bootloader/TwigBootloader.php

Lines 18 to 39 in 6ab7994

	$container->bindSingleton('twig', function (Container $container) {
	// Use a hack to get Twig from the ViewManager as it is not available as an service yet
	$viewManager = $container->get(ViewManager::class);
	$engines = $viewManager->getEngines();
	$twigEngine = null;
	foreach ($engines as $engine) {
	if ($engine instanceof TwigEngine) {
	$twigEngine = $engine;
	break;
	}
	}
	if (null === $twigEngine) {
	throw new \LogicException(
	\sprintf('Expected "%s" to be registered in the view manager.', TwigEngine::class)
	);
	}
	return $twigEngine->getEnvironment(new ViewContext());
	});

Upstream issue: spiral/twig-bridge#10