[TwigComponent] Allow standalone usage with any PSR-11 container

[guillaume-sainthillier]

Q	A
Bug fix?	no
New feature?	yes
Deprecations?	no
Documentation?	no
Issues	-
License	MIT

Allow TwigComponent's runtime to work without symfony/dependency-injection.

ComponentFactory and ComponentRuntime only ever call get()/has() on
their injected service locator. Both methods are defined by PSR-11
Psr\Container\ContainerInterface, which Symfony's ServiceLocator already
implements — so the injection points can be typehinted against the interface
instead of the concrete class.

This decouples the runtime classes from the DI component: they can now be
wired with any PSR-11 container, enabling standalone (non-Symfony) usage with
just Twig. symfony/dependency-injection moves to require-dev (still pulled
transitively via symfony/framework-bundle in a full Symfony app, and only
needed at runtime for the bundle's extension/compiler-pass classes).

// Standalone wiring, no symfony/dependency-injection required
$factory = new ComponentFactory(
    $templateFinder,
    $myPsr11Container, // any Psr\Container\ContainerInterface
    $propertyAccessor,
    $eventDispatcher,
    $config,
    $classMap,
    $twig,
);

[Kocal]

Thank you @guillaume-sainthillier.