Proposition about onInput/onChange

Hi :)

In ReactDom we can find:

function getTargetInstForInputOrChangeEvent(topLevelType, targetInst) {
	if (topLevelType === TOP_INPUT || topLevelType === TOP_CHANGE) {
		return getInstIfValueChanged(targetInst);
	}
}

Why not adding an extra condition here like:

function getTargetInstForInputOrChangeEvent(topLevelType, targetInst) {
	if ((!React.$$useRealOnChange && topLevelType === TOP_INPUT) || topLevelType === TOP_CHANGE) {
		return getInstIfValueChanged(targetInst);
	}
}

By checking React.$$useRealOnChange in this function, a user could add this line:

React.$$useRealOnChange = true;

anywhere in their code (before or after including ReactDom) to find back the more native behavior.

I'm sorry in advance if this proposition has already been proposed

The issue names getTargetInstForInputOrChangeEvent in ReactDom; start there and read the surrounding input/change event handling. Review the discussion for an agreed behavior, then confirm the final decision with coverage for the resulting event semantics.