We should document what the ext::oneapi::property::queue::lazy_execution queue property does, as it is in the PoC but not in the SYCL_EXT_ONEAPI_GRAPH specification.

If we require users to use this property when writing code with graphs, we should advertise somewhere that it exists and what it does. Even if it is accompanied by a note saying that the property is temporary and will only exist until a more complete implementation is developed.