Language provider errors are ignored

[Gaming32]

If a language provider isn't present, an errors list is created and passed to the sorter.

https://github.com/neoforged/FancyModLoader/blob/9b239e3414695ee2ab49ad6cc9aa96484db456de/loader/src/main/java/net/neoforged/fml/loading/moddiscovery/ModValidator.java#L99-L104

However, ModSorter.sort completely ignores its second argument, leading to missing language providers (modLoaders) simply skipping mods with no more than a logged error message. The language can't even be put into dependencies, because mods with erroring language providers get entirely removed from the mod list (before dependencies are checked).