The `show_caption_for?` method was used to determine whether to check for the
presence of a `figcaption` element, but its only purpose was to skip the check
when the factory was `:budget.
The reason we skip the `figcaption` check for `:budget` is that it is the only case
where the test is verifying the form's edit page, where displaying a `figcaption` does
not make sense.
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