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

从 Checkbox 和 Radio 组件开始，检查它们的 body prop 是如何被包装的，包括 issue 中提到的 isLabelWrapped 行为。确定是否可以在不破坏现有 label 行为的情况下支持 flow content；完成的标准是两个组件都接受预期的内容，或者 Checkbox 文档明确说明 body 内容必须是 phrasing content。