Updating TCIA MRI Anatomy Model Notebook

[ericspod]

Fixes #2029.

Description

This attempts to fix the itkwidgets and pydicom_seg issues with this notebook. @ericspod has tested the notebook locally through Jupyter on Windows and got (mostly) eveything to work, but it appears to not render the ITK cells under Colab.

Checks

• Avoid including large-size files in the PR.
• Clean up long text outputs from code cells in the notebook.
• For security purposes, please check the contents and remove any sensitive info such as user names and private key.
• 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
• Notebook runs automatically ./runner.sh -t <path to .ipynb file>

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[KumoLiu]

Hi @ericspod, please help fix the format issue:
https://github.com/Project-MONAI/tutorials/actions/runs/18038199679/job/51330060145?pr=2037#step:7:412