Add explicit input types for vectorized into int form

[sholderbach]

Description

Don't just use List<Any>, be precise for the vectorized form as well.

User-Facing Changes

More explicit albeit verbose type information in the signature

[amtoine]

i like being explicite 😊

just a little question and i think we are good to go 😌

[sholderbach]

This change is actually not fine with our current type system and what was possible before #9680.
With just the explicit types only homogeneous lists are supported but we actually could support heterogeneous lists with scalars of all supported primitive types. We currently have no way to explicitly express this with the type system, we would either need type unions or something like interfaces/traits for IntoInt.
So at the moment we still need to keep a List<Any> input for heterogenous coercion to work.

[sholderbach]

OK pivoted to just adding the explicit signatures for better documentation but keeping the overly broad list<any> form for now to not introduce a breaking change.

[amtoine]

i think this makes sense and will give a better input/output signature table 😊