[4.x] CallableResolver is misused as Container provider

[bnf]

#2555 introduced a new method getContainer for the CallableResolverInterface.
This is actually a hack that is used to hide a real dependency to the ContainerInterface. Classes that use CallableResolverInterface::getContainer need to be refactored to depend on ContainerInterface directly and the method CallableResolverInterface::getContainer should be removed again.

Here is an example how Slim\Routable uses the CallableResolver to fetch the container:
$this->callableResolver->getContainer():

Slim/Slim/Routable.php

Lines 63 to 64 in 5311e95

	if (is_string($middleware)) {
	$middleware = new DeferredResolutionMiddleware($middleware, $this->callableResolver->getContainer());

[l0gicgate]

There’s more changes coming to Route/RouteGroups/Routable that is upcoming as I discussed in #2583. It will deal with all of this.

[l0gicgate]

Closing #2591 has been merged