No index entry generated for custom categories specified in sidebars.js

[kdb13]

I'm using the sidebars.js file to use separate sidebars with their individual autogenerated indexes. The following code shows an example:

howtos: [
    {
      type: 'category',
      label: 'HowTos',
      link: {
        type: 'generated-index',
        title: 'HowTos',
        slug: '/how-tos'
      },
      items: [{type: 'autogenerated', dirName: 'how-tos'}]
    }
  ],

When I use the docusaurus-search-local plugin and build my project, I'm only able to search for the pages which are present within the howtos category but I cannot search for the autogenerated index page for howtos itself.

Example

Suppose there is a page such as howtos/vpn.md. Then I can search for the VPN page but not for the root howtos page which when manually accessed from URL shows the autogenerated index cards.