Changes:
* Code is moved from SkinVector to SkinVectorLegacy verbatim since it is now only
needed by SkinVectorLegacy
so we remove it:
** This step broke MainMenu rendering so this was captured in VectorComponentMainMenu
** The isLegacy code no longer makes sense and is removed in a follow up
* storybook no longer run on CI
Authors: Bernard Wang and Jon Robson
Bug: T321102
Bug: T319349
Change-Id: Ib424ca1c767161fdae8c0aeedfe662b7fa039ff6
