fixes invertd issue (#1042)

Signed-off-by: Wenqi Li <wenqil@nvidia.com>

Fixes #1041

### Description
issue introduced by Project-MONAI/MONAI#5512

### Checks
<!--- Put an `x` in all the boxes that apply, and remove the not
applicable items -->
- [ ] Notebook runs automatically `./runner [-p <regex_pattern>]`

Signed-off-by: Wenqi Li <wenqil@nvidia.com>

Author: wyli

3d_segmentation/brats_segmentation_3d.ipynb

@@ -814,6 +814,7 @@
     "        meta_key_postfix=\"meta_dict\",\n",
     "        nearest_interp=False,\n",
     "        to_tensor=True,\n",
+    "        device=\"cpu\",\n",
     "    ),\n",
     "    Activationsd(keys=\"pred\", sigmoid=True),\n",
     "    AsDiscreted(keys=\"pred\", threshold=0.5),\n",

3d_segmentation/spleen_segmentation_3d.ipynb

@@ -717,6 +717,7 @@
     "        meta_key_postfix=\"meta_dict\",\n",
     "        nearest_interp=False,\n",
     "        to_tensor=True,\n",
+    "        device=\"cpu\",\n",
     "    ),\n",
     "    AsDiscreted(keys=\"pred\", argmax=True, to_onehot=2),\n",
     "    AsDiscreted(keys=\"label\", to_onehot=2),\n",