It's not _wrong_ to time out when connecting to something unreachable
(it's just a different way of handling it) so we shouldn't fail when
this happens either.
In local testing (windows) it times out after 8 seconds, so bump
the timer to 10 seconds. On systems where it's faster there'll be
no difference as long as things don't go wrong.
Pick-to: 6.0
Fixes: QTBUG-89089
Change-Id: I8437cf8e4fbecedea2391ed87fdce1213085b964
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>