Client-side timeouts are ignored for `_iter` requests.

[Lorak-mmk]

Client timeouts are handled in Session::run_request. Auto-paging requests do not go trough this method. They use QyeryPager instead. Important code there is in QueryPager::work. Unfortunately it does not handle client-side timeouts in any way - so there is potential for requests to hang forever!

[wprzytula]

I'm assuming that the semantics of client-side timeouts should involve limit for a single page fetch, not for the whole query. Time measurement of the whole paged query would not be reliable, as it's the user who control speed of consecutive pages fetching (by consuming rows).