`FigureWidget` fails with `anywidget` in colab

Problem:
Since v6.0.0 FigureWidget uses anywidget. However, it fails with a java script error.

$ pip show plotly anywidget
Name: plotly
Version: 6.0.0
Summary: An open-source, interactive data visualization library for Python
Home-page: https://plotly.com/python/
Author: Chris P
Author-email: chris@plot.ly
License: MIT
Location: /home/erti/PROJECT_repos/ForeST_HPO/hpo-innosuisse/.venv_anywidget/lib/python3.11/site-packages
Requires: narwhals, packaging
Required-by: 
---
Name: anywidget
Version: 0.9.13
Summary: custom jupyter widgets made easy
Home-page: 
Author: 
Author-email: Trevor Manz <trevor.j.manz@gmail.com>
License: MIT
Location: /home/erti/PROJECT_repos/ForeST_HPO/hpo-innosuisse/.venv_anywidget/lib/python3.11/site-packages
Requires: ipywidgets, psygnal, typing-extensions
Required-by: 

import plotly.graph_objs as go
fig = go.FigureWidget()
fig.add_scatter(y=[2, 1, 4, 3])
fig

Either, no output (no figure) is shown or this is shown:

Failed to load view class 'AnyView' from module 'anywidget'
Error: No version of module anywidget is registered
    at WidgetManager.loadClass (https://file+.vscode-resource.vscode-cdn.net/home/erti/.vscode/extensions/ms-toolsai.jupyter-renderers-1.1.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2420023)
    at WidgetManager.loadClass (https://file+.vscode-resource.vscode-cdn.net/home/erti/.vscode/extensions/ms-toolsai.jupyter-renderers-1.1.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2803837)
    at WidgetManager.loadViewClass (https://file+.vscode-resource.vscode-cdn.net/home/erti/.vscode/extensions/ms-toolsai.jupyter-renderers-1.1.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2417001)
    at https://file+.vscode-resource.vscode-cdn.net/home/erti/.vscode/extensions/ms-toolsai.jupyter-renderers-1.1.0/out/node_modules/%40vscode/jupyter-ipywidgets8/dist/ipywidgets.js:2:2410155
    at async Tt.renderWidget (https://file+.vscode-resource.vscode-cdn.net/home/erti/.vscode/extensions/ms-toolsai.jupyter-2024.11.0-linux-x64/dist/webviews/webview-side/ipywidgetsKernel/ipywidgetsKernel.js:17:17328)
    at async op (https://file+.vscode-resource.vscode-cdn.net/home/erti/.vscode/extensions/ms-toolsai.jupyter-2024.11.0-linux-x64/dist/webviews/webview-side/ipywidgetsKernel/ipywidgetsKernel.js:17:31113)

Workaround:
Downgrading to plotly-5.24 solves the problem

Related:
Maybe somewhat related to https://github.com/plotly/plotly.py/issues/4996

Riproduci il problema con Plotly 6.0.0 e anywidget 0.9.13 usando lo snippet FigureWidget fornito, quindi confrontalo con plotly-5.24. Inizia tracciando l’integrazione di FigureWidget e anywidget; il lavoro è completato quando la figura viene renderizzata senza l’errore JavaScript segnalato nell’ambiente notebook interessato.