[Doc] Add documentation for <CheckForApplicationUpdate onNewVersionAvailable>

[smeng9]

Closes #9432

[fzaninotto]

Thanks for the PR.

I think the hook should remain private - we just can't document all hooks, or the doc will become too large. As the component supports all the props of the hook, you should just document the onNewVersionAvailable prop in the <CheckForApplicationUpdate> component chapter.

[fzaninotto]

Thanks!

[smeng9]

Hi @fzaninotto

The Props for typescript should probably be updated, we should no longer omit the callback in the props.
https://github.com/marmelab/react-admin/blob/master/packages/ra-ui-materialui/src/layout/CheckForApplicationUpdate.tsx#L88

Also there should be no space in the documentation for the prop https://github.com/marmelab/react-admin/blob/master/docs/CheckForApplicationUpdate.md?plain=1#L49

[slax57]

@smeng9 Thanks for your reply.

You are correct about the TS type, I'll open a quick PR. EDIT: #9444

Regarding the space in the prop's name in the documentation, this is intentional, to allow the table to break the word for a better layout.