feat: S2 SelectBox (#8541)
* S2 SelectBox initial implementation
* Added tests and fixed linting
* updated tests to remove styles
* selectbox refactor and tests refactor
* stories changes and various edits
* replaced aria components with a gridlist
* fixed borders and redid stories/tests
* removed extraneous overrides and isEmphasized prop
* lint and removed XS
* test-utils-internal swap
* test-utils-internal swap
* swapped useId library
* swapped to listbox
* added additional props and removed s2 checkbox
* revised tests, added additional props, swapped to UI checkmark to avoid accessibility issues
* adjusted illustration size
* removed the sizing and fixed various alignment issues. replaced checkbox behavior
* fixed group disabled checkbox issue
* pruned styles
* fixed label overflow, description still remaining
* moved selectbox into same file, reworked grid, addressed various gh comments
* s2(SelectBoxGroup): center label in horizontal layout when only label is present
* s2(SelectBoxGroup): support [DEFAULT_SLOT] as label styles for text-only children
* removed extra story and count check
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Co-authored-by: Daniel Pandyan <dpadbe@work.local>
