Fix: don't fail entire rewrite if recursive type did not match anywhere at top-level

[Gegy]

Usually, rewrites to recursive types are deeply nested - which will cause any failure to fallback to no-op (through most Type.all() implementations). The semantics of everywhere are similar to all - if nothing can be rewritten internally, that is not an error state.

This will cause no fixer function to be produced if a top-level recursive type has a fixer defined within a version range, but that type does not exist within the type being fixed.

Doesn't currently impact Vanilla, but became a bit more likely with 1a8eb41.

[fry-mojang]

I believe returning nop and empty should be mostly equivalent in general; I remember it being useful to see if the fixer failed to apply to any type at all, but maybe comparing the result to nop on the top-level is a better way to see that