Potential crash when creating arrays from Iterators if size_hint is not correct

[alamb]

Note: migrated from original JIRA: https://issues.apache.org/jira/browse/ARROW-10886

It appears that the code that implements converting iterators to arrow arrays effectively relies on size_hint to return the precise size of the iterator otherwise it will crash (maybe) -- but I think the intention of size_hint is, as the name suggests, a hint.

The goal of this ticket is to remove the assumption in the code that size_hint must return a value as well as the assumption that it is accurate.

More details can be found here
apache/arrow#8842 (comment)

[tustvold]

This is no longer an issue