[5.1] Make alias resolution recursive

[theofidry]

If you have a service foo, which has an alias baz, which itself has an alias bat, then trying to resolve bat with the Container will fail.

Now in practice that's not much of an issue, because you more commonly using Application which extends Container, and Application::make() will try to resolve the alias first, before calling its parent make() method. So the scenario above is actually resolved.

However there is still two cases where it will fail:

• When you are using more than 2 alias, i.e. we would have another alias bap for bat for example. [1]
• When your original service is declared in a deferred provider. [2]

[1]: Not very common as you rarely need that many aliases.

[2]: If foo is declared in a deferred provider, when making bat, the abstract got will be baz, which may not be declared as a service provided by the deferred provider, resulting in a service not found.

A simple fix would be to make the alias resolution recursive, not big changes required, no BC break AFAICS and no big (if any) performance impact either.