更改Symfony MessageSelector以使用'en'PultiralizationRule进行语言环境'sl'

A while ago I asked the following question.

Now, instead of rewriting all Slovenian translation files, I'd like to tell Symfony to simply use English pluralization rules instead.

I already tried the following answer, but it seems like Symfony doesn't care about this service at all: https://stackoverflow.com/a/15809808

Is there another way with Symfony 3?