Check if id exists earlier

[Niq1982]

In case the ID i missing we are creating a empty item to the element. Later the initializing will skip the invalid item, because it exists. So check for the id in the initializing stage and add it as a parameter to the constructor

air-reactions/src/modules/AirReaction.js

Lines 6 to 8 in 2b3e81e

	if (! ('airReactionId' in reactionElement.dataset)) {
	return false;
	}