Fix shrinking in non strech alignments
Fix shrinking in non strech alignments

Summary:
This fixes shrinking of elements which are in a non stretch alignment

Fixes #633
Closes https://github.com/facebook/yoga/pull/634

Differential Revision: D5874862

Pulled By: emilsjolander

fbshipit-source-id: 1426aa6b60f6ba42c2be702e6f24cea935ab7acb

facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho