Checkbox/Radio - allow flow content as body

Is this a new component or an extension of an existing one?

Existing components, Checkbox and Radio.

Describe the feature

To allow flow content for their body prop. Currently it's wrapped in a span element, which only admits phrasing content.

Are there visuals for this feature? If applicable, please include examples for each state and for varying widths

I don't think so.

Any other information?

• The body being wrapped in a span was requested in a review because the Radio isLabelWrapped prop. See https://github.com/patternfly/patternfly-react/pull/5559#pullrequestreview-617903386

• I've created a silly weird example of a Checkbox using flow content in its body, just for illustrating a possible use case of a React node returning a div. See https://codesandbox.io/s/weird-patternfly-checkbox-91mzqq or the screenshot uploaded below

  Click to show/hide a screenshot of the output from the Codesanbox pasted above

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• If the change isn't possible beacuse the benefit does not pay off complicating the code for these components, at least it would be nice to mention in the documentation that the expected React.ReactNode must return phrasing content only

Start with the Checkbox and Radio components and inspect how their body prop is wrapped, including the isLabelWrapped behavior referenced in the issue. Determine whether flow content can be supported without breaking the existing label behavior; done means both components accept the intended content, or the Checkbox documentation clearly states that body content must be phrasing content.