"Lazy initial state" is actually greedy

Is there any good reason to call the useState(() => ...) feature "Lazy initial state"? The actual implementation is synchronous ("greedy") as far as I can tell, so I would propose to rename it to "Functional initial state" (for consistency with "Functional updates").

• docs: https://reactjs.org/docs/hooks-reference.html#lazy-initial-state
• implementation: https://github.com/facebook/react/blob/02da938fd51f6345ca185d571ea6628189ae81a7/packages/react-reconciler/src/ReactFiberHooks.new.js#L1135-L1142

Related "Lazy initialization" in useReducer section => I would propose "Initialization function"

• docs: https://reactjs.org/docs/hooks-reference.html#lazy-initialization
• implementation: https://github.com/facebook/react/blob/02da938fd51f6345ca185d571ea6628189ae81a7/packages/react-reconciler/src/ReactFiberHooks.new.js#L646-L657

I can make a PR unless someone points out some aspect of the naming that I missed.

Issue でリンクされている Hooks のリファレンスセクション「lazy initial state」と「lazy initialization」から始めます。それらの用語を、参照されている実装 ReactFiberHooks.new.js および「Functional updates」の文言と比較します。ドキュメントの用語がレビューされ、合意された命名が両方のセクションに一貫して適用されていれば完了です。