Add default test for box sizing (#1716)

Summary:
X-link: https://github.com/facebook/react-native/pull/46800

Pull Request resolved: https://github.com/facebook/yoga/pull/1716

Had a mini heart attack thinking I set the default to content box. Wrote this to double check and it passed. Might as well check it in

Technically the default to BoxSizing.h is ContentBox, but in the style we override that. Regardless I switched that around so border box was the default.

Changelog: [Internal]

Reviewed By: NickGerleman

Differential Revision: D63802722

fbshipit-source-id: 49ed29657c964bc12a2bf70988061ab4599267ec

javascript/src/generated/YGEnums.ts

@@ -20,8 +20,8 @@ export enum Align {
 }
 
 export enum BoxSizing {
-  ContentBox = 0,
-  BorderBox = 1,
+  BorderBox = 0,
+  ContentBox = 1,
 }
 
 export enum Dimension {
@@ -142,8 +142,8 @@ const constants = {
   ALIGN_SPACE_BETWEEN: Align.SpaceBetween,
   ALIGN_SPACE_AROUND: Align.SpaceAround,
   ALIGN_SPACE_EVENLY: Align.SpaceEvenly,
-  BOX_SIZING_CONTENT_BOX: BoxSizing.ContentBox,
   BOX_SIZING_BORDER_BOX: BoxSizing.BorderBox,
+  BOX_SIZING_CONTENT_BOX: BoxSizing.ContentBox,
   DIMENSION_WIDTH: Dimension.Width,
   DIMENSION_HEIGHT: Dimension.Height,
   DIRECTION_INHERIT: Direction.Inherit,