Checkbox doesn't support descriptions for material-ui / bootstrap-4

[gaitat]

Prerequisites

• I have read the documentation;
• In the case of a bug report, I understand that providing a SSCCE example is tremendously useful to the maintainers.

Description

The description of the the boolean field widget is missing when the theme is material-ui and bootstrap-4

Steps to Reproduce

1. Go to the playground https://rjsf-team.github.io/react-jsonschema-form/
2. Select the Widgets from the top row and observe the boolean field on the right when the default theme is selected. The top widget (checkbox) has a visible description of This is the checkbox-description.
3. If you select the material-ui or bootstrap-4 theme the description disappears for the checkbox widget. The description is still there for the radio widget and the select widget.
4. Is there a way to bring it back?

Expected behavior

I expect to see (somewhere) the description of the boolean field widget

Actual behavior

The description disappears for the checkbox widget

Version

These are the packages that I have installed:
"@rjsf/core": "2.4.1",
"react": "16.14.0",
"react-icons": "4.1.0",
"react-dom": "16.14.0",
"react-bootstrap": "1.4.3",
"@rjsf/bootstrap-4": "2.4.1",
"@material-ui/core": "4.11.2",
"@material-ui/icons": "4.11.2",
"@rjsf/material-ui": "2.4.1",

[nurikk]

Same issue, I've created example with issue
https://codesandbox.io/s/custom-fields-example-forked-2c09r

[zehawki]

I can confirm this issue as well. I see in the playground, as well as in my own experimentation. Occurring only for single checkbox.

[arunim2405]

Was the fix for this released for material-ui? If yes, which version?

[stale]

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[stale]

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