fix: Avoid chunked_array overlapping overloads

[dangotbanned]

Fixes the blanket mypy ignore and 12x pyright warnings

There were two distinct problems

1. NullableIterable[T] overlapped in every case, since Iterable[None] matched all cases
2. date | datetime and int | bool | float each needed to share an overload
   i. See special cases if this was surprising - the others are simply nominal subtypes

[dangotbanned]

I believe pa.array has the same issue

pyarrow-stubs/pyarrow-stubs/__lib_pxi/array.pyi

Lines 61 to 67 in c482d8f

	_T = TypeVar("_T")
	NullableIterable: TypeAlias = Iterable[_T | None]
	@overload # type: ignore[overload-overlap]
	def array(
	values: NullableIterable[bool],

That leads to this kind of mismatch with int -> bool