Add errata for fix to marginStart/End for row-reverse flex direction (#1419)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1419

X-link: https://github.com/facebook/litho/pull/961

X-link: https://github.com/facebook/react-native/pull/40803

This stack is ultimately aiming to solve https://github.com/facebook/yoga/issues/1208

This adds an value to the Errata enum. I will use this to gate this fix as there is potential for users to rely on this bug or have a hack in place to fix it and this would be a breaking change.

Reviewed By: NickGerleman

Differential Revision: D50145273

fbshipit-source-id: 913d2103cd31c1fa94cb39fc15d05b0c0b255920

javascript/src/generated/YGEnums.ts

@@ -49,6 +49,7 @@ export enum Edge {
 export enum Errata {
   None = 0,
   StretchFlexBasis = 1,
+  StartingEndingEdgeFromFlexDirection = 2,
   All = 2147483647,
   Classic = 2147483646,
 }
@@ -158,6 +159,7 @@ const constants = {
   EDGE_ALL: Edge.All,
   ERRATA_NONE: Errata.None,
   ERRATA_STRETCH_FLEX_BASIS: Errata.StretchFlexBasis,
+  ERRATA_STARTING_ENDING_EDGE_FROM_FLEX_DIRECTION: Errata.StartingEndingEdgeFromFlexDirection,
   ERRATA_ALL: Errata.All,
   ERRATA_CLASSIC: Errata.Classic,
   EXPERIMENTAL_FEATURE_WEB_FLEX_BASIS: ExperimentalFeature.WebFlexBasis,