Feature: Storybook doesn't show an error for a story file with Meta but no stories

Describe the bug

If you create a sandbox e.g. npx storybook@next sandbox then run Storybook

Then modify the contents of the Button.stories file to only this:

export default {
  title: 'Hello',
}

or

import { Button } from './Button'
export default {
  component: Button
}

Storybook will not display any errors in the CLI or in the browser, and the Button component will not be visible in the sidebar:

Additionally, you get the same behavior if you change the contents of the story file to be:

import { Button } from './Button'
export default {
  component: Button,
  excludeStories: 'Default'
}

export const Default = {}