Non-blocking pipes still appear to be isBlocking

[Charles Oliver Nutter]

On Wed, Jan 31, 2024 at 12:21 PM Alan Bateman <Alan.Bateman at oracle.com> wrote:
> That said, there isn't any reason to do have the pipe channels work like the network channels and do it lazily. I have a draft PR [1] that does this and will mull it over next week.

This gets my vote. It would fix our user's issue very neatly since the
child side of the pipes would remain blocking (as they were before
Loom).