[5.7] [Option 2] Improve PSR-11 implementation

[deleugpn]

Same description of #25870, but with the following differences:

• A simpler implementation with less feedback.
• The PSR-11 user will not be able to differentiate a NotFoundExceptionInterface from a ContainerExceptionInterface.

The Usage for this one would be as follows. The container might throw ReflectionException when the identifier is not a class name. Although this would not be fully compatible with PSR-11, it would still give a lot more benefit when using the container than the current implementation.

function (ContainerInterface $container) {
    // ...

    try {
        $class = $container->get($identifier);
    } catch (ContainerExceptionInterface | ReflectionException $e) 
        // Cannot resolve $identifier
    } 
}