Fix initialisation error

Summary: There was an initialisation error possible if the crash reporter tried to start with an initial selection (after coming from a deeplink or the notification pane), which would cause an unending update loop.

Reviewed By: passy

Differential Revision: D29331127

fbshipit-source-id: 14e75e483c232039e6a80aa131fa5ce7c105b670

desktop/flipper-plugin/src/ui/data-table/__tests__/DataTable.node.tsx

@@ -555,10 +555,7 @@ test('onSelect callback fires, and in order', () => {
     ref.current!.selectItem(2);
   });
 
-  expect(events.splice(0)).toEqual([
-    [undefined, []],
-    [item3, [item3]],
-  ]);
+  expect(events.splice(0)).toEqual([[item3, [item3]]]);
 
   act(() => {
     ref.current!.addRangeToSelection(0, 0);
@@ -606,10 +603,7 @@ test('selection always has the latest state', () => {
     ref.current!.selectItem(2);
   });
 
-  expect(events.splice(0)).toEqual([
-    [undefined, []],
-    [item3, [item3]],
-  ]);
+  expect(events.splice(0)).toEqual([[item3, [item3]]]);
 
   const item3updated = {
     title: 'item 3 updated',