Container::$parameters contains unresolved Statement instances #221

Version: dev-master, 3.0.x, 2.4.x

Bug Description

Parameters attribute in generated DI container contain unresolved Nette\DI\Definitions\Statement instances.

Steps To Reproduce

Generate container with the following config:

parameters:
	bar: ::getenv(FOO)

The generated code of DI container will have something like this in constructor:

$this->parameters += [
	'bar' => Nette\PhpGenerator\Helpers::createObject('Nette\DI\Definitions\Statement', [
		'arguments' => ['FOO'],
		"\x00Nette\\DI\\Definitions\\Statement\x00entity" => ['', 'getenv'],
	]),
];

Expected Behavior

I would expect the parameters to be resolved the same way as they are if they are used as arguments in service definitions.