Fix erroneous _ListLike type in Series / Index methods

[MarcoGorelli]

• Closes #xxxx (Replace xxxx with the Github issue number)
• Tests added: Please use assert_type() to assert the type of any return value

closes #1427

_ListLike is used in the Series constructor for the data argument, but I think it may be misnamed, as it's then been reused in other places that don't accept the same types (in particular, that don't accept dict)

So I've:

• renamed _ListLike to _DataLike
• used ListLike in other places which currently use _ListLike but don't actually accept dict input. In cases where we end up with ListLike | Index | Series, I've removed Index | Series as ListLike already contains them
• For Index arithmetic methods, I've used ArrayLike | SequenceNotStr[S1], which is the same as what _ListLike was but without the extraneous dict[str, np.ndarray]

[cmp0xff]

I like the changes. But there is a lot of them. I would like to wait for a second pair of eyes. cc @Dr-Irv @loicdiridollou

[Dr-Irv]

thanks @MarcoGorelli