Add a type that determines if a query type is an incremental query or not

[jerelmiller]

With the changes in #12700, it is now possible to add your own Streaming type implementation to better type narrow the dataState: "streaming" case to the proper type. We currently have no way, however, to determine whether a query type actually includes a @deferdirective, sodataStateis at minimum a union ofcomplete | streaming`.

We'd like a way to remove streaming from the union with an additional type that can determine if its an incremental type or not. By default, the implementation should return true to maintain backwards compatibility.