Doc block gets overridden if .story is defined

[ianldgs]

If we have something like:

// Some documentation
export const myStory = ({prop}) => {
  <>{prop}</>;
}

myStory.story = {
  args: {
    prop: 'value'
  }
}

"Some documentation" does't show on the docs page.

Current workaround:

// Some documentation
export const myStory = ({prop}) => {
  <>{prop}</>;
}

myStory.story = {
+  ...myStory.story, // to merge what this loader has defined
  args: {
    prop: 'value'
  }
}