(reverted) Add `Iterable<T>` as recognized `IterationType` instance (along with `Iterable`, `Stream`)

[cowtowncoder]

Describe your Issue

Since #3950 added new IterationType (in Jackson 2.16), 2 types are recognized:

       if (rawType == Iterator.class || rawType == Stream.class) {

But as per:

FasterXML/jackson-dataformat-xml#646

it would seem Iterable should also be recognized similarly. If so, this could be changed in 2.18.

[cowtowncoder]

Alas, had to revert this from 2.18 due to failure in https://github.com/FasterXML/jackson-datatypes-collections/ for HPPC ObjectArraySerializer serialization.