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.

從 CHANGELOG.md 以及 issue 中引用的 React 16.12.0 changelog 項目開始。根據連結的 MDN 和 Stack Overflow 參考資料驗證所回報的 forEach() 行為，然後判斷 changelog 是否缺少項目；當報告獲得驗證，且 changelog 在適用的情況下準確反映該版本發布時，即表示完成。