feat: RAC NavigationTree (#10404)
* feat: RAC SideNav
* fix ts
* fix again
* Convert docs to use S2 SideNav and move scrolling logic inside the component
* fix tests
* remove api not supported
* remove disabled docs section
* Rename RAC SideNav to NavigationTree
* make rac style examples match s2 more
* update docs from review
* Always default to having Components open
* add anatomy diagram and fix fonts in parcel 3 svgs
