Some Storybook Pages Render Empty With Error `children.match is not a function`

[westwood846]

I think this was originally found by @vinhnglx. Probably similar to the issue 952ed72 attempted to fix.

[westwood846]

Related issues:

• children.match is not a function when using HTML entity numbers inside <code> inside markdown table storybookjs/storybook#15359
• Is HTML no longer allowed in doc details? storybookjs/storybook#15932