[Fizz] Fix crash when capturing the callsite of a stalled use() of a Flight chunk that was rejected in the meantime (#36544)

`ensureSuspendableThenableStateDEV` patches `then` in fulfilled
thenables to avoid triggering a custom thenable's `then` in an
unexpected state. However, we weren't doing the same for rejected
thenables.

This affected `ReactPromise`, the type used for thenables passed from
server to client. if a `ReactPromise` passed to `use` was pending during
the render but became rejected between the abort and
`pushSuspendedCallSiteOnComponentStack`, then `ReactPromise#then` would
crash. (see the added test for a reprouction)
This is because we were putting the ReactPromise into an invalid state:
a `PendingChunk` expects to have a `value: null | Array<...>`, but we
were deleting `value` altogether, and tgus hitting `TypeError: can't
access property "push" of undefined` here:

https://github.com/facebook/react/blob/75b0945b18f4a60c80c931fd8067d9c715957879/packages/react-client/src/ReactFlightClient.js#L309
Bypassing the suspended thenable's `then` avoids this crash.