Unified Storage: Add sort order to keys func in datastore (#110714)

* Add sort order to keys func in datastore. Add test to not prune deleted events.

* include sort field in the ListRequestKey instead of it being a separate param

pkg/storage/unified/resource/datastore.go

@@ -106,6 +106,7 @@ type ListRequestKey struct {
 	Group     string
 	Resource  string
 	Name      string
+	Sort      SortOrder
 }
 
 func (k ListRequestKey) Validate() error {
@@ -194,6 +195,7 @@ func (d *dataStore) Keys(ctx context.Context, key ListRequestKey) iter.Seq2[Data
 		for k, err := range d.kv.Keys(ctx, dataSection, ListOptions{
 			StartKey: prefix,
 			EndKey:   PrefixRangeEnd(prefix),
+			Sort:     key.Sort,
 		}) {
 			if err != nil {
 				yield(DataKey{}, err)