Fix #2666: DataTable: Cell edit support Dropdown. (#4178)

* Fix #3559: Component: Calendar -> keepInvalid no longer works

* Calendar update fix for isInvalid

* make isSingleSelection support for keepInvalid

* fix body-cell editor dropdown

components/lib/datatable/BodyCell.js

@@ -475,7 +475,7 @@ export const BodyCell = React.memo((props) => {
     }, [props.editingMeta]);
 
     React.useEffect(() => {
-        if (props.editMode === 'cell' || props.editMode === 'row') {
+        if (props.editMode === 'row') {
             const callbackParams = getCellCallbackParams();
             const params = { ...callbackParams, editing: editingState, editingKey };