Update bundle related notebook (#1508)

Fixes # .

### Description
After avoiding the breaking changes in the `load` API in
Project-MONAI/MONAI#6950, may need to update the
bundle-related notebooks in this
[PR](#1504).

Mainly added `return_state_dict=False` to avoid return state_dict by
default, will remove it after 1.5.

### Checks
<!--- Put an `x` in all the boxes that apply, and remove the not
applicable items -->
- [x] Avoid including large-size files in the PR.
- [x] Clean up long text outputs from code cells in the notebook.
- [x] For security purposes, please check the contents and remove any
sensitive info such as user names and private key.
- [x] Ensure (1) hyperlinks and markdown anchors are working (2) use
relative paths for tutorial repo files (3) put figure and graphs in the
`./figure` folder
- [x] Notebook runs automatically `./runner.sh -t <path to .ipynb file>`

---------

Signed-off-by: KumoLiu <yunl@nvidia.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: KumoLiu

bundle/pythonic_usage_guidance/pythonic_bundle_access.ipynb

@@ -144,7 +144,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [
     {
@@ -159,18 +159,18 @@
       "url None\n",
       "remove_prefix monai_\n",
       "progress True\n",
-      "2023-09-06 08:44:11,165 - INFO - --- input summary of monai.bundle.scripts.download ---\n",
-      "2023-09-06 08:44:11,167 - INFO - > name: 'spleen_ct_segmentation'\n",
-      "2023-09-06 08:44:11,167 - INFO - > bundle_dir: '/workspace/Data'\n",
-      "2023-09-06 08:44:11,167 - INFO - > source: 'github'\n",
-      "2023-09-06 08:44:11,167 - INFO - > remove_prefix: 'monai_'\n",
-      "2023-09-06 08:44:11,168 - INFO - > progress: True\n",
-      "2023-09-06 08:44:11,168 - INFO - ---\n",
+      "2023-09-07 12:19:11,083 - INFO - --- input summary of monai.bundle.scripts.download ---\n",
+      "2023-09-07 12:19:11,086 - INFO - > name: 'spleen_ct_segmentation'\n",
+      "2023-09-07 12:19:11,088 - INFO - > bundle_dir: '/workspace/Data'\n",
+      "2023-09-07 12:19:11,089 - INFO - > source: 'github'\n",
+      "2023-09-07 12:19:11,090 - INFO - > remove_prefix: 'monai_'\n",
+      "2023-09-07 12:19:11,091 - INFO - > progress: True\n",
+      "2023-09-07 12:19:11,092 - INFO - ---\n",
       "\n",
       "\n",
-      "2023-09-06 08:44:12,165 - INFO - Expected md5 is None, skip md5 check for file /workspace/Data/spleen_ct_segmentation_v0.5.3.zip.\n",
-      "2023-09-06 08:44:12,165 - INFO - File exists: /workspace/Data/spleen_ct_segmentation_v0.5.3.zip, skipped downloading.\n",
-      "2023-09-06 08:44:12,166 - INFO - Writing into directory: /workspace/Data.\n"
+      "2023-09-07 12:19:11,991 - INFO - Expected md5 is None, skip md5 check for file /workspace/Data/spleen_ct_segmentation_v0.5.3.zip.\n",
+      "2023-09-07 12:19:11,992 - INFO - File exists: /workspace/Data/spleen_ct_segmentation_v0.5.3.zip, skipped downloading.\n",
+      "2023-09-07 12:19:11,994 - INFO - Writing into directory: /workspace/Data.\n"
      ]
     }
    ],
@@ -198,13 +198,13 @@
       "workflow_name None\n",
       "config_file /workspace/Data/spleen_ct_segmentation/configs/train.json\n",
       "workflow_type train\n",
-      "2023-09-06 09:18:47,393 - INFO - --- input summary of monai.bundle.scripts.run ---\n",
-      "2023-09-06 09:18:47,395 - INFO - > config_file: '/workspace/Data/spleen_ct_segmentation/configs/train.json'\n",
-      "2023-09-06 09:18:47,396 - INFO - > workflow_type: 'train'\n",
-      "2023-09-06 09:18:47,397 - INFO - ---\n",
+      "2023-09-07 12:19:14,769 - INFO - --- input summary of monai.bundle.scripts.run ---\n",
+      "2023-09-07 12:19:14,772 - INFO - > config_file: '/workspace/Data/spleen_ct_segmentation/configs/train.json'\n",
+      "2023-09-07 12:19:14,775 - INFO - > workflow_type: 'train'\n",
+      "2023-09-07 12:19:14,776 - INFO - ---\n",
       "\n",
       "\n",
-      "2023-09-06 09:18:47,397 - INFO - Setting logging properties based on config: /workspace/Data/spleen_ct_segmentation/configs/logging.conf.\n"
+      "2023-09-07 12:19:14,778 - INFO - Setting logging properties based on config: /workspace/Data/spleen_ct_segmentation/configs/logging.conf.\n"
      ]
     }
    ],
@@ -395,18 +395,27 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "# Here we specify `return_state_dict=False` to return an instantiated model only for compatibility, will remove after MONAI v1.5.\n",
     "# directly get an instantiated network that loaded the weights.\n",
-    "model = load(name=\"brats_mri_segmentation\", bundle_dir=root_dir, source=\"monaihosting\")\n",
+    "model = load(name=\"brats_mri_segmentation\", bundle_dir=root_dir, source=\"monaihosting\", return_state_dict=False)\n",
     "\n",
     "# directly update the parameters for the model from the bundle.\n",
-    "model = load(name=\"brats_mri_segmentation\", bundle_dir=root_dir, source=\"monaihosting\", in_channels=3, out_channels=1)\n",
+    "model = load(\n",
+    "    name=\"brats_mri_segmentation\",\n",
+    "    bundle_dir=root_dir,\n",
+    "    source=\"monaihosting\",\n",
+    "    in_channels=3,\n",
+    "    out_channels=1,\n",
+    "    return_state_dict=False,\n",
+    ")\n",
     "\n",
     "# using `exclude_vars` to filter loading weights.\n",
     "model = load(\n",
     "    name=\"brats_mri_segmentation\",\n",
     "    bundle_dir=root_dir,\n",
     "    source=\"monaihosting\",\n",
     "    copy_model_args={\"exclude_vars\": \"convInit|conv_final\"},\n",
+    "    return_state_dict=False,\n",
     ")\n",
     "\n",
     "# pass model and return an instantiated network that loaded the weights.\n",