Widgets from ipywidgets 8.0.0rc0 do not load properly in VSCode; checkbox missing, play loads the older version

[saravanabalagi]

Environment data

• VS Code version: 1.65.2
• Jupyter Extension version (available under the Extensions sidebar): v2022.2.1030672458
• Python Extension version (available under the Extensions sidebar): v2022.2.1924087327
• OS (Windows | Mac | Linux distro) and version: Ubuntu 20.04.4
• Python and/or Anaconda version: 3.8.10
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): poetry
• Jupyter server running: Local

Expected behaviour

Widgets load properly in VSCode as they do in Jupyter Notebook (Browser) and Jupyter Lab (Browser)

Actual behaviour

Widgets do not load properly

1. Play button is from the older version, possible caching?
2. Checkbox does not appear

Steps to reproduce:

1. Create a new env with depedency ipywidgets = "^8.0.0rc0"
2. Create widgets

from ipywidgets import widgets

play = widgets.Play(
    value=50,
    min=0,
    max=100,
    step=1,
    interval=500,
    description="Press play",
    disabled=False
)
slider = widgets.IntSlider()
widgets.jslink((play, 'value'), (slider, 'value'))
display(widgets.HBox([play, slider]))

display(widgets.Checkbox(
    value=False,
    description='Check me',
    disabled=False,
    indent=False
))

Logs

Output for Jupyter in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Jupyter)

Info 14:46:52: Execute Cells request 0, 1, 2, 3
Info 14:46:52: Execute Cell 0 /fastscratch/projects/python/dev/test.ipynb
Info 14:46:52: Execute Cell 1 /fastscratch/projects/python/dev/test.ipynb
Info 14:46:52: Execute Cell 2 /fastscratch/projects/python/dev/test.ipynb
Info 14:46:52: Execute Cell 3 /fastscratch/projects/python/dev/test.ipynb
Info 14:46:53: Cell 0 executed with state Success
Info 14:46:53: Cell 1 executed with state Success
Info 14:46:53: Cell 2 executed with state Success
Info 14:46:53: Cell 3 executed with state Success
Error 14:46:53: Widget load failure [object Object] {
  className: 'CheckboxStyleModel',
  moduleName: '@jupyter-widgets/controls',
  moduleVersion: '2.0.0',
  cdnsUsed: false,
  isOnline: true,
  timedout: false,
  error: {}
}
Error 14:46:53: Widget load failure [object Object] {
  className: 'CheckboxStyleModel',
  moduleName: '@jupyter-widgets/controls',
  moduleVersion: '2.0.0',
  cdnsUsed: false,
  isOnline: true,
  timedout: false,
  error: {}
}

Additional Settings

[rchiodo]

Dupe of #8552