get tf_df_in_tf_js.md colab code to export all 3 files (fix #205)

[hchiam]

fix #205

i made an even more recent demo today of it requiring these changes to work --> in that folder, you can find two .ipynb files for reference:

• 2024_01_29_tf_keras_fail.ipynb
  • using tf_keras like the tutorial currently suggests causes an error, and
  • my js demo still won't work if you revert tf_keras back to tf.keras, because you'd still be missing assets.zip (one of the 3 files that are supposed to be in the exported tfjs_model.zip)
• 2024_01_29_tf.keras_WORKS.ipynb

[rstz]

I believe this is no longer required after 14b58329b8115a63246903d51de32cf06b467b30 landed, please confirm

[hchiam]

I believe this is no longer required after 14b5832 landed, please confirm

unfortunately the issue still seems to exist - when i unzip the file, it's still missing the assets.zip file:

https://colab.research.google.com/drive/18Rqmg0sa9KNphPh3F0RmNve2wCZBDQUI?usp=sharing

so just running the code as-is written in https://github.com/tensorflow/decision-forests/blob/14b58329b8115a63246903d51de32cf06b467b30/documentation/tf_df_in_tf_js.md#running-tensorflow-decision-forests-models-with-tensorflowjs won't get all files needed for my local js demo to run

unless i did something wrong in my colab

[rstz]

You're absolutely right, sorry! Thank you very much for the fix!