Teach GetAll and WaitAny to work with SharedTaskWithResult

[apolukhin]

At the moment intrusive WaitList hook is used in SharedTaskWithResult, so it can not be added into multiple WaitLists.

Add tests with invoking GetAll concurrently on the same set of SharedTaskWithResult

Internal ticket: 4805

[Anton3]

Will try to merge lock-free WaitList some time soon, after that the path is clear