Describe the bug
Some widgets from ipywidgets v8 don't render

To Reproduce
Make sure you have the ipywidgets v8 (e.g. v8.0.4) installed.

Try to render the tab widget:

import  ipywidgets as widgets
tab_contents = ['P0', 'P1', 'P2', 'P3', 'P4']
children = [widgets.Text(description=name) for name in tab_contents]
tab = widgets.Tab()
tab.children = children
tab.titles = [str(i) for i in range(len(children))]
tab

Expected behavior
The tab widget renders

Observed
Error: Uncaught (in promise) Class TextStyleModel not found in module @jupyter-widgets/controls@undefined

Screenshots

Additional context
Are there any plan to support ipywidgets v8? It looks like the following Jupyter-widgets packages (https://github.com/nteract/outputs/blob/master/packages/jupyter-widgets/package.json) need to be updated to support it.
"@jupyter-widgets/base": "^4.0.0",
"@jupyter-widgets/controls": "^3.0.0",