docs(Table): fix sort issue in TableExampleSortable (#4097)

Co-authored-by: Pechlivanis Dimitrios <[email protected]>
Co-authored-by: Oleksandr Fediashov <[email protected]>

docs/src/examples/collections/Table/Variations/TableExampleSortable.js

@@ -15,7 +15,7 @@ function exampleReducer(state, action) {
       if (state.column === action.column) {
         return {
           ...state,
-          data: state.data.reverse(),
+          data: state.data.slice().reverse(),
           direction:
             state.direction === 'ascending' ? 'descending' : 'ascending',
         }