[React 19] react-reconciler README is missing scheduler and form hooks

## Summary I've been working on updating the types for react-reconciler, and found methods are still missing from its README after recent updates. These are detailed in https://github.com/pmndrs/react-three-fiber/pull/3242 based on implementation, but they are as follows: - `NotPendingTransition`, `HostTransitionContext` #26722 - `setCurrentUpdatePriority`, `getCurrentUpdatePriority`, `resolveUpdatePriority` #28751 - `resetFormInstance` #28804 - `requestPostPaintCallback` #25105 - `shouldAttemptEagerTransition` #26025 - `trackSchedulerEvent` #31528 - `resolveEventType`, `resolveEventTimeStamp` #31008 I can open a PR for updating the README specifically, but I haven't looked deeper to see if there was anything else missing in the repo.