Forbids scroll query that sets size to 0

A scroll query like the following:
````
POST _search?scroll=1m
{
  "size": 0
}
````
... returns no hit but subsequent queries with the returned scroll id will replay the entire query even though there is no hits to return.
It would be better to throw an exception on the initial query in order to forbids scroll query with `size:0`. 

Relates #22500