fix: various S2 bug fixes from docs testing (#9272)
* remove allowsEmptycollection from our pickers since we dont support that behavior
* fix focusing DateFields on mobile tap
* fix SelectBoxGroup overflow when horizontal and only show checkbox in multiple selection
* fix taggroup remove button
* update link button to support genai and premium variants
* clear the context at the collapse collection level instead
* review comments
* chromatic fix
* make sure unavaliable dates are never marked as selected
* fix test case
* get rid of act
