[Flare] Fix issues with touch + pointer interactions

[trueadm]

This PR fixes a bunch of issues and removes some dead code from Press. Specifically, the event object we returned to the user wasn't always return the right co-ords if multiple events were being used at once (it only got the properties from the first even object). Also, pointer events that are touch events always have the same target as the original press start, so we now only use the logic for checking targets within targets for mouse events. To improve code, we now also leverage touchEvent on state to make things a bit saner.

[sizebot]

Details of bundled changes.

Comparing: dd93357...2dd34a2

react-events

File	Filesize Diff	Gzip Diff	Prev Size	Current Size	Prev Gzip	Current Gzip	ENV
react-events-drag.development.js	0.0%	+0.1%	5.93 KB	5.93 KB	1.67 KB	1.67 KB	UMD_DEV
react-events-drag.production.min.js	0.0%	🔺+0.1%	2.56 KB	2.56 KB	1.16 KB	1.16 KB	UMD_PROD
react-events.development.js	0.0%	+0.1%	1.31 KB	1.31 KB	707 B	708 B	UMD_DEV
ReactEventsPress-dev.js	-1.6%	-1.7%	28.27 KB	27.82 KB	6.57 KB	6.46 KB	FB_WWW_DEV
react-events-focus-scope.production.min.js	0.0%	🔺+0.1%	1.82 KB	1.82 KB	956 B	957 B	UMD_PROD
ReactEventsPress-prod.js	-3.9%	-3.5%	21.49 KB	20.66 KB	4.54 KB	4.38 KB	FB_WWW_PROD
react-events-focus-scope.development.js	0.0%	+0.1%	4.06 KB	4.06 KB	1.27 KB	1.27 KB	NODE_DEV
react-events-scroll.development.js	0.0%	+0.1%	3.92 KB	3.92 KB	1.22 KB	1.22 KB	UMD_DEV
react-events-scroll.production.min.js	0.0%	🔺+0.1%	1.78 KB	1.78 KB	875 B	876 B	UMD_PROD
react-events-scroll.production.min.js	0.0%	🔺+0.1%	1.59 KB	1.59 KB	796 B	797 B	NODE_PROD
react-events-hover.development.js	0.0%	-0.0%	8.61 KB	8.61 KB	2.06 KB	2.06 KB	NODE_DEV
react-events-hover.production.min.js	0.0%	🔺+0.1%	3.64 KB	3.64 KB	1.34 KB	1.34 KB	NODE_PROD
react-events-press.development.js	-1.7%	-1.4%	28.87 KB	28.39 KB	6.79 KB	6.7 KB	UMD_DEV
react-events-press.production.min.js	-0.5%	-2.7%	9.01 KB	8.97 KB	3.27 KB	3.18 KB	UMD_PROD
react-events-swipe.production.min.js	0.0%	🔺+0.1%	2.65 KB	2.65 KB	1.19 KB	1.2 KB	UMD_PROD
react-events-press.development.js	-1.7%	-1.5%	28.68 KB	28.21 KB	6.74 KB	6.64 KB	NODE_DEV
react-events-press.production.min.js	-0.5%	-2.7%	8.82 KB	8.78 KB	3.2 KB	3.12 KB	NODE_PROD

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