fix(Datagrid): add getSubRows property to useDatagrid to avoid se…

…arch removing nested rows (#5501)

* chore: begin investigating nested row search issues

* fix(Datagrid): update storybook to use getSubRows workaround

* chore: apply getSubRows to other stories

packages/ibm-products/src/components/Datagrid/Extensions/NestedRows/NestedRows.stories.jsx

@@ -57,7 +57,7 @@ return <Datagrid datagridState={datagridState} />;
         />
       ),
     },
-    layout: 'fullscreen',
+    layout: 'padded',
   },
   argTypes: {
     featureFlags: {
@@ -200,6 +200,7 @@ const SingleLevelNestedRows = ({ ...args }) => {
       data,
       DatagridActions,
       ...args.defaultGridProps,
+      getSubRows: (row) => row.subRows,
     },
     useNestedRows
   );
@@ -239,6 +240,7 @@ const NestedRows = ({ ...args }) => {
       data,
       DatagridActions,
       ...args.defaultGridProps,
+      getSubRows: (row) => row.subRows,
     },
     useNestedRows
   );
@@ -276,6 +278,7 @@ const SelectableNestedRows = ({ ...args }) => {
       data,
       DatagridActions,
       ...args.defaultGridProps,
+      getSubRows: (row) => row.subRows,
     },
     useNestedRows,
     useSelectRows