Ability to hide Stories from Sidebar

[ToneyPK]

Is your feature request related to a problem? Please describe.

Let's say I have an Accordion.mdx file inside of which is the following:

<Meta of={AccordionStories} />
<Controls of={AccordionPanelStories.Basic} />

Problematic thing is that I want to also show <Controls /> of another Story as well.
Currently I have this to work around the problem:

export default {
  title: 'Hidden/AccordionPanelComponent',
  component: AccordionPanelComponent,
} as Meta;

export const Basic: StoryObj<AccordionPanelComponent> = {};

The component exists under the Hidden title category and in the manager-head.html I have the following in order to hide the stories under Hidden from the sidebar (as it is just a part of the Accordion story and doesn't need to be shown, only .mdx is required):

<style>
  #storybook-explorer-menu #hidden,
  #storybook-explorer-menu #hidden ~ * {
    display: none;
  }
</style>

By doing this, the .mdx sample above works and I can use the <Controls of="AccordionPanelStories.Basic" /> but I think that this could be supported by having a configuration property (e.g. 'hidden' or 'showInSidebar = false'). All of this of course is said in the context of only using the .mdx.` file for showing the components.
What do you say?

Describe the solution you'd like

Maybe:

type StoryAnnotations = {
   ...
   showInSidebar: boolean
}

Describe alternatives you've considered

Already explained.

Are you able to assist to bring the feature to reality?

yes, I can

Additional context

No response