Suggestion: Reorder properties in HtmlAttribute

[amcasey]

After discussing #38399 with @ahejlsberg, @RyanCavanaugh, and @DanielRosenwasser it sounds like one possible improvement we could make to the check time of code consuming JSX.IntrinsicElements (and related libraries) would be to reorder some of the properties in HTMLAttributes so that the ones depending on the type parameter are resolved first when comparing types structurally (i.e. so we hit the variance short-circuit ASAP). We could consider submitting PRs to that effect.

[DanielRosenwasser]

Related are:

• Rearranging members of Array<T> to improve error reporting. #436
• Make 'pop' the first method that uses 'T' in 'Array' #25565

though we mostly did this for error-reporting purposes.

Another similar thing I recall was adding property tags in RxJS to force a little bit of nominality: https://github.com/ReactiveX/rxjs/pull/1474/files