Upstream Keyboarding and Accessibility Changes to Touchable/Pressable

[NickGerleman]

We made changes to allow spacebar activation to Touchable, as well as forwarding more accessibility properties to the underlying view. We should upstream these.

[NickGerleman]

I'm going to likely need to reimplement this in Pressability for the 0.62 upgrade. I can upstream what I end up doing there if we have general keyboard stuff by that time.