Nested index routes cause double slash in route names

[JarvisH]

Reproduction

See steps to reproduce

Steps to reproduce the bug

Using file based routing create:

• a root index.vue file with its own nested router-view,
• an "index" folder
• a nested component "posts" inside the "index"-Folder.

Expected behavior

It is expected, that the nested routes will look like all other non-index nested routes:

   '/posts/': RouteRecordInfo<
      '/posts/',
      '/posts',
      Record<never, never>,
      Record<never, never>,
      | never
    >

Actual behavior

It will generate leading double slashes and no trailing slashes for nested route names which then look like this:

    '/': RouteRecordInfo<
      '/',
      '/',
      Record<never, never>,
      Record<never, never>,
      | '//posts'
    >,
    '//posts': RouteRecordInfo<
      '//posts',
      '/posts',
      Record<never, never>,
      Record<never, never>,
      | never
    >,

Additional information

Am not sure if nested index routes are even possible?

[posva]

This is intended, it's just the name, the path is still correct.
tip: use route groups to have a name without two slashes together