* Fix incomplete sorting. * fmt. * Better test. * Update runtime/parachains/src/disputes.rs Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com> * chore fmt * simplify the sorting for two items * add test for assure duplicates are detected * fixup tests Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com> Co-authored-by: Bernhard Schuster <bernhard@ahoi.io>