Adds `@material/web/tokens/internal/shape` to take a shape token and create 4 logical tokens from its value.
All components' logical shape tokens are now generated by the token files themselves, rather than added in each component's styles.
PiperOrigin-RevId: 601783846
BREAKING CHANGE: Rename `@material/web/iconbutton/lib` to `@material/web/iconbutton/internal`. Prefer not using internal files.
PiperOrigin-RevId: 550579461