[Devtools] Look for a ReactMemoCacheSentinel on state #28831
Merged
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The useMemoCache polyfill doesn't have access to the fiber, and it simply uses state, which makes it not work with the devtools.
With this PR, devtools will look on the very first hook's state for this sentinel and display the Forget badge if present.
The polyfill will add this sentinel to it's state (the cache array).