Clarify distinction between local and internal state references

[wheresrhys]

Motivation

Ambiguity in the docs. It says it updates isSent, but in the code example isSent is a local variable, and the local variable is not in fact updated. I'm not sure if my mental model accurately describes what's really going on, or if this is quite the right place for this suggestion, but I feel it's helpful to be clear that the local variable is not updated, and that React's internal, persistent isSent "variable" is what gets updated

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[github-actions]

Size changes

Details

📦 Next.js Bundle Analysis for react-dev

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This PR introduced no changes to the JavaScript bundle! 🙌