Small refactor to make RCTView more readable
Small refactor to make RCTView more readable

Summary:
Fixes some comment typos, moves hit testing and accessibility code so it's beside each other.

No functionality changes.

Changelog:[Internal]

Reviewed By: RSNara

Differential Revision: D22003047

fbshipit-source-id: 0e785364d7e1a080034d24c9676a56acb45686bb

javache/react-native,myntra/react-native,facebook/react-native,pandiaraj44/react-native,hoangpham95/react-native,facebook/react-native,arthuralee/react-native,pandiaraj44/react-native,facebook/react-native,javache/react-native,janicduplessis/react-native,pandiaraj44/react-native,pandiaraj44/react-native,javache/react-native,arthuralee/react-native,janicduplessis/react-native,facebook/react-native,janicduplessis/react-native,janicduplessis/react-native,myntra/react-native,janicduplessis/react-native,hoangpham95/react-native,javache/react-native,myntra/react-native,facebook/react-native,javache/react-native,hoangpham95/react-native,javache/react-native,janicduplessis/react-native,javache/react-native,javache/react-native,javache/react-native,myntra/react-native,arthuralee/react-native,facebook/react-native,pandiaraj44/react-native,myntra/react-native,hoangpham95/react-native,facebook/react-native,myntra/react-native,hoangpham95/react-native,hoangpham95/react-native,arthuralee/react-native,pandiaraj44/react-native,arthuralee/react-native,myntra/react-native,hoangpham95/react-native,janicduplessis/react-native,myntra/react-native,facebook/react-native,hoangpham95/react-native,facebook/react-native,pandiaraj44/react-native,myntra/react-native,janicduplessis/react-native,pandiaraj44/react-native