feat(switch): s2 migration (#2651)

* feat(switch): s2 migration
* chore: remove themes
* fix: animation
* fix: whcm light mode unchecked handle shows
* docs(storybook): align chromatic setup with new standard
* fix: checked corners for non-retina display
* fix: whcm handle selected color
* fix: namespace mods, use semantic tokens instead of global
* fix: handle state colors

Author: Melissa Thompson