Change Missing From Changelog: forEach() Loop's `Return` returns to forEach()'s invocation point, not to the calling function.

Hey all,

I'm noticing that in upgrading to ReactJS Version 16.12.0 from 16.7.0, the behavior of foreach was changed, so that return returns to where foreach is called, and not the function calling the function containing the foreach. But I don't see this change here:

https://github.com/facebook/react/blob/master/CHANGELOG.md

Basically,

function1() {
	function2();
	console.log("function 1");
}

function2() {
	const arr = ['cool'];
	arr.forEach((var) => {
		return var;
	});
	console.log("function 2");
}

Before 16.12.0, console output was: "function 1", but now it is "function 2; function 1." This change appears to be against MDN documentation and internet consensus: https://stackoverflow.com/questions/34653612/what-does-return-keyword-mean-inside-foreach-function

But it should have been included in the changelog, though I am not seeing it. Let me know if I'm misunderstanding.

从 CHANGELOG.md 以及 issue 中引用的 React 16.12.0 changelog 条目开始。根据链接的 MDN 和 Stack Overflow 参考资料验证报告的 forEach() 行为，然后确定 changelog 是否缺少条目；当报告得到验证且 changelog 在适用的情况下准确反映该版本发布时，即表示完成。