[Fiber] Stash ThenableState on the Dependencies Object for Use By DevTools (#30866)

This lets us track what a Component might suspend on from DevTools. We
could already collect this by replaying a component's Hooks but that
would be expensive to collect from a whole tree.

The thenables themselves might contain useful information but mainly
we'd want access to the `_debugInfo` on the thenables which might
contain additional information from the server.


https://github.com/facebook/react/blob/19bd26beb689e554fceb0b929dc5199be8cba594/packages/shared/ReactTypes.js#L114

In a follow up we should really do something similar in Flight to
transfer `use()` on the debugInfo of that Server Component.

[ghstack-poisoned]