dillon1000/react

[Flight] model halted references explicitly (#30731)

using infinitely suspending promises isn't right because this will parse
as a promise which is only appropriate if the value we're halting at is
a promise. Instead we need to have a special marker type that says this
reference will never resolve. Additionally flight client needs to not
error any halted references when the stream closes because they will
otherwise appear as an error

addresses:
https://github.com/facebook/react/pull/30705#discussion_r1720479974