revert test fixes

Author: reidbarber

packages/@react-spectrum/list/test/ListView.test.js

@@ -1722,7 +1722,7 @@ describe('ListView', function () {
       act(() => {
         jest.runAllTimers();
       });
-      expect(grid.firstChild).toBeInTheDocument();
+      expect(grid.firstChild).toBeEmptyDOMElement();
     });
   });
 });

packages/@react-spectrum/list/test/ListViewDnd.test.js

@@ -434,7 +434,12 @@ describe('ListView', function () {
         expect(onDrop).toHaveBeenCalledTimes(1);
 
         fireEvent(cell, new DragEvent('dragend', {dataTransfer, clientX: 1, clientY: 110}));
-        expect(onDragEnd).toHaveBeenCalledTimes(1);
+        // TODO: fix in strict mode, due to https://github.com/facebook/react/issues/29585
+        if (isReact19) {
+          expect(onDragEnd).toHaveBeenCalledTimes(2);
+        } else {
+          expect(onDragEnd).toHaveBeenCalledTimes(1);
+        }
 
         act(() => jest.runAllTimers());
 
@@ -477,10 +482,18 @@ describe('ListView', function () {
         fireEvent(grid, new DragEvent('drop', {dataTransfer, clientX: 1, clientY: 150}));
         act(() => jest.runAllTimers());
         await act(async () => Promise.resolve());
-        expect(onDrop).toHaveBeenCalledTimes(1);
+        if (isReact19) {
+          expect(onDrop).toHaveBeenCalledTimes(1);
+        } else {
+          expect(onDrop).toHaveBeenCalledTimes(1);
+        }
 
         fireEvent(cell, new DragEvent('dragend', {dataTransfer, clientX: 1, clientY: 150}));
-        expect(onDragEnd).toHaveBeenCalledTimes(1);
+        if (isReact19) {
+          expect(onDragEnd).toHaveBeenCalledTimes(2);
+        } else {
+          expect(onDragEnd).toHaveBeenCalledTimes(1);
+        }
 
         act(() => jest.runAllTimers());