Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1561
Back when I introduced the inline functions that would get the edge according to the writing direction I swapped some instances of `setLayoutPosition` which wrote to the flexStart edge erroneously. We should basically never read from some inline style and write to the flex edge. This changes them all to use the flex values.
Reviewed By: NickGerleman
Differential Revision: D52921401
fbshipit-source-id: 92b74d652018596134c91827806272ed7418ef6c
8fe38fc7a8